diff --git a/.flowconfig b/.flowconfig
index f9f5008ab28..6a02582fad3 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -12,4 +12,4 @@
 .*/test/integration/render-tests/.*
 
 [version]
-0.66.0
+0.69.0
diff --git a/flow-typed/vector-tile.js b/flow-typed/vector-tile.js
index 1fc1a947621..160b08c8339 100644
--- a/flow-typed/vector-tile.js
+++ b/flow-typed/vector-tile.js
@@ -5,6 +5,7 @@ declare interface VectorTile {
 }
 
 declare interface VectorTileLayer {
+    version?: number;
     name: string;
     extent: number;
     length: number;
diff --git a/package.json b/package.json
index 893daa532f0..e9d9d3eefc4 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "eslint-plugin-node": "^5.1.1",
     "eslint-plugin-react": "^7.3.0",
     "execcommand-copy": "^1.1.0",
-    "flow-bin": "^0.66.0",
+    "flow-bin": "^0.69.0",
     "flow-coverage-report": "^0.3.0",
     "github-slugger": "^1.1.1",
     "gl": "^4.0.1",
diff --git a/src/source/geojson_worker_source.js b/src/source/geojson_worker_source.js
index 5013946443d..2d0fdfe6a39 100644
--- a/src/source/geojson_worker_source.js
+++ b/src/source/geojson_worker_source.js
@@ -29,6 +29,7 @@ export type LoadGeoJSONParameters = {
     request?: RequestParameters,
     data?: string,
     source: string,
+    cluster: boolean,
     superclusterOptions?: Object,
     geojsonVtOptions?: Object
 };
diff --git a/src/source/source.js b/src/source/source.js
index 5b372a11b40..154fb3b803f 100644
--- a/src/source/source.js
+++ b/src/source/source.js
@@ -8,6 +8,7 @@ import type Map from '../ui/map';
 import type Tile from './tile';
 import type {OverscaledTileID} from './tile_id';
 import type {Callback} from '../types/callback';
+import {CanonicalTileID} from './tile_id';
 
 /**
  * The `Source` interface must be implemented by each source type, including "core" types (`vector`, `raster`,
@@ -34,15 +35,6 @@ import type {Callback} from '../types/callback';
  * if they are floor-ed to the nearest integer.
  */
 export interface Source {
-    /**
-     * An optional URL to a script which, when run by a Worker, registers a {@link WorkerSource}
-     * implementation for this Source type by calling `self.registerWorkerSource(workerSource: WorkerSource)`.
-     * @private
-     */
-    // Static interface properties are not supported in flow as of 0.62.0.
-    // https://github.com/facebook/flow/issues/5590
-    // static workerSourceURL?: URL;
-
     +type: string;
     id: string;
     minzoom: number,
@@ -51,6 +43,9 @@ export interface Source {
     attribution?: string,
 
     roundZoom?: boolean,
+    isTileClipped?: boolean,
+    mapbox_logo?: boolean,
+    tileID?: CanonicalTileID;
     reparseOverscaled?: boolean,
     vectorLayerIds?: Array<string>,
 
@@ -77,6 +72,17 @@ export interface Source {
     +prepare?: () => void;
 }
 
+type SourceStatics = {
+    /**
+     * An optional URL to a script which, when run by a Worker, registers a {@link WorkerSource}
+     * implementation for this Source type by calling `self.registerWorkerSource(workerSource: WorkerSource)`.
+     * @private
+     */
+    workerSourceURL?: URL;
+};
+
+export type SourceClass = Class<Source> & SourceStatics;
+
 import vector from '../source/vector_tile_source';
 import raster from '../source/raster_tile_source';
 import rasterDem from '../source/raster_dem_tile_source';
diff --git a/src/source/source_cache.js b/src/source/source_cache.js
index 75e3eaa65b4..4069fd537c3 100644
--- a/src/source/source_cache.js
+++ b/src/source/source_cache.js
@@ -241,7 +241,7 @@ class SourceCache extends Evented {
     _tileLoaded(tile: Tile, id: string | number, previousState: TileState, err: ?Error) {
         if (err) {
             tile.state = 'errored';
-            if (err.status !== 404) this._source.fire(new ErrorEvent(err, {tile}));
+            if ((err: any).status !== 404) this._source.fire(new ErrorEvent(err, {tile}));
             // continue to try loading parent/children tiles if a tile doesn't exist (404)
             else this.update(this.transform);
             return;
@@ -461,7 +461,7 @@ class SourceCache extends Evented {
         if (!this.used) {
             idealTileIDs = [];
         } else if (this._source.tileID) {
-            idealTileIDs = transform.getVisibleUnwrappedCoordinates((this._source.tileID: any))
+            idealTileIDs = transform.getVisibleUnwrappedCoordinates(this._source.tileID)
                 .map((unwrapped) => new OverscaledTileID(unwrapped.canonical.z, unwrapped.wrap, unwrapped.canonical.z, unwrapped.canonical.x, unwrapped.canonical.y));
         } else {
             idealTileIDs = transform.coveringTiles({
diff --git a/src/style-spec/feature_filter/index.js b/src/style-spec/feature_filter/index.js
index 54cad4aaf3a..82e84896c98 100644
--- a/src/style-spec/feature_filter/index.js
+++ b/src/style-spec/feature_filter/index.js
@@ -47,9 +47,10 @@ function isExpressionFilter(filter: any) {
 const filterSpec = {
     'type': 'boolean',
     'default': false,
-    'function': true,
+    'function': 'piecewise-constant',
     'property-function': true,
-    'zoom-function': true
+    'zoom-function': true,
+    'transition': false
 };
 
 /**
diff --git a/src/style-spec/style-spec.js b/src/style-spec/style-spec.js
index 51c6ac7b92c..1d48171fc9c 100644
--- a/src/style-spec/style-spec.js
+++ b/src/style-spec/style-spec.js
@@ -2,50 +2,57 @@
 
 export type StylePropertySpecification = {
     type: 'number',
-    'function': boolean,
+    'function': 'interpolated' | 'piecewise-constant',
     'property-function': boolean,
     'zoom-function': boolean,
+    transition: boolean,
     default?: number
 } | {
     type: 'string',
-    'function': boolean,
+    'function': 'interpolated' | 'piecewise-constant',
     'property-function': boolean,
     'zoom-function': boolean,
     default?: string,
+    transition: boolean,
     tokens?: boolean
 } | {
     type: 'boolean',
-    'function': boolean,
+    'function': 'interpolated' | 'piecewise-constant',
     'property-function': boolean,
     'zoom-function': boolean,
+    transition: boolean,
     default?: boolean
 } | {
     type: 'enum',
-    'function': boolean,
+    'function': 'interpolated' | 'piecewise-constant',
     'property-function': boolean,
     'zoom-function': boolean,
     values: {[string]: {}},
+    transition: boolean,
     default?: string
 } | {
     type: 'color',
-    'function': boolean,
+    'function': 'interpolated' | 'piecewise-constant',
     'property-function': boolean,
     'zoom-function': boolean,
+    transition: boolean,
     default?: string
 } | {
     type: 'array',
     value: 'number',
-    'function': boolean,
+    'function': 'interpolated' | 'piecewise-constant',
     'property-function': boolean,
     'zoom-function': boolean,
+    transition: boolean,
     length?: number,
     default?: Array<number>
 } | {
     type: 'array',
     value: 'string',
-    'function': boolean,
+    'function': 'interpolated' | 'piecewise-constant',
     'property-function': boolean,
     'zoom-function': boolean,
+    transition: boolean,
     length?: number,
     default?: Array<string>
 };
diff --git a/src/style/style.js b/src/style/style.js
index 86ac69d92e1..29c033c5c99 100644
--- a/src/style/style.js
+++ b/src/style/style.js
@@ -18,7 +18,8 @@ import Dispatcher from '../util/dispatcher';
 import { validateStyle, emitValidationErrors as _emitValidationErrors } from './validate_style';
 import {
     getType as getSourceType,
-    setType as setSourceType
+    setType as setSourceType,
+    type SourceClass
 } from '../source/source';
 import { queryRenderedFeatures, queryRenderedSymbols, querySourceFeatures } from '../source/query_features';
 import SourceCache from '../source/source_cache';
@@ -43,7 +44,6 @@ const emitValidationErrors = (evented: Evented, errors: ?$ReadOnlyArray<{message
 
 import type Map from '../ui/map';
 import type Transform from '../geo/transform';
-import type {Source} from '../source/source';
 import type {StyleImage} from './style_image';
 import type {StyleGlyph} from './style_glyph';
 import type {Callback} from '../types/callback';
@@ -914,7 +914,7 @@ class Style extends Evented {
         return sourceCache ? querySourceFeatures(sourceCache, params) : [];
     }
 
-    addSourceType(name: string, SourceType: Class<Source>, callback: Callback<void>) {
+    addSourceType(name: string, SourceType: SourceClass, callback: Callback<void>) {
         if (Style.getSourceType(name)) {
             return callback(new Error(`A source type called "${name}" already exists.`));
         }
diff --git a/src/ui/bind_handlers.js b/src/ui/bind_handlers.js
index ceb2fd712d3..b8f9767bedc 100644
--- a/src/ui/bind_handlers.js
+++ b/src/ui/bind_handlers.js
@@ -21,7 +21,7 @@ const handlers = {
     touchZoomRotate
 };
 
-export default function bindHandlers(map: Map, options: {}) {
+export default function bindHandlers(map: Map, options: {interactive: boolean}) {
     const el = map.getCanvasContainer();
     let contextMenuEvent = null;
     let mouseDown = false;
@@ -97,7 +97,7 @@ export default function bindHandlers(map: Map, options: {}) {
         if (map.dragPan.isActive()) return;
         if (map.dragRotate.isActive()) return;
 
-        let target: any = e.toElement || e.target;
+        let target: ?Node = (e.target: any);
         while (target && target !== el) target = target.parentNode;
         if (target !== el) return;
 
@@ -105,7 +105,7 @@ export default function bindHandlers(map: Map, options: {}) {
     }
 
     function onMouseOver(e: MouseEvent) {
-        let target: any = e.toElement || e.target;
+        let target: ?Node = (e.target: any);
         while (target && target !== el) target = target.parentNode;
         if (target !== el) return;
 
diff --git a/src/ui/control/fullscreen_control.js b/src/ui/control/fullscreen_control.js
index 35198c1c57d..539a26b549b 100644
--- a/src/ui/control/fullscreen_control.js
+++ b/src/ui/control/fullscreen_control.js
@@ -110,11 +110,11 @@ class FullscreenControl {
             }
         } else if (this._mapContainer.requestFullscreen) {
             this._mapContainer.requestFullscreen();
-        } else if (this._mapContainer.mozRequestFullScreen) {
+        } else if ((this._mapContainer: any).mozRequestFullScreen) {
             (this._mapContainer: any).mozRequestFullScreen();
-        } else if (this._mapContainer.msRequestFullscreen) {
+        } else if ((this._mapContainer: any).msRequestFullscreen) {
             (this._mapContainer: any).msRequestFullscreen();
-        } else if (this._mapContainer.webkitRequestFullscreen) {
+        } else if ((this._mapContainer: any).webkitRequestFullscreen) {
             (this._mapContainer: any).webkitRequestFullscreen();
         }
     }
diff --git a/src/util/evented.js b/src/util/evented.js
index 87b01f02ef9..c4d31ceb098 100644
--- a/src/util/evented.js
+++ b/src/util/evented.js
@@ -1,6 +1,6 @@
 // @flow
 
-import { extend, endsWith } from './util';
+import { extend } from './util';
 
 type Listener = (Object) => any;
 type Listeners = { [string]: Array<Listener> };
@@ -29,6 +29,8 @@ export class Event {
 }
 
 export class ErrorEvent extends Event {
+    error: Error;
+
     constructor(error: Error, data: Object = {}) {
         super('error', extend({error}, data));
     }
@@ -120,10 +122,8 @@ export class Evented {
 
         // To ensure that no error events are dropped, print them to the
         // console if they have no listeners.
-        } else if (endsWith(type, 'error')) {
-            console.error((event && event.error) || event || 'Empty error event');
-        } else if (endsWith(type, 'warning')) {
-            console.warn((event && event.warning) || event || 'Empty warning event');
+        } else if (event instanceof ErrorEvent) {
+            console.error(event.error);
         }
 
         return this;
diff --git a/src/util/worker_pool.js b/src/util/worker_pool.js
index 24ae4d178d7..63dc69b1327 100644
--- a/src/util/worker_pool.js
+++ b/src/util/worker_pool.js
@@ -19,7 +19,7 @@ class WorkerPool {
         this.active = {};
     }
 
-    acquire(mapId: number) {
+    acquire(mapId: number): Array<WorkerInterface> {
         if (!this.workers) {
             // Lazily look up the value of mapboxgl.workerCount so that
             // client code has had a chance to set it.
diff --git a/yarn.lock b/yarn.lock
index 5882d86e004..7b63206fac5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4171,9 +4171,9 @@ flatten@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/flatten/-/flatten-1.0.2.tgz#dae46a9d78fbe25292258cc1e780a41d95c03782"
 
-flow-bin@^0.66.0:
-  version "0.66.0"
-  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.66.0.tgz#a96dde7015dc3343fd552a7b4963c02be705ca26"
+flow-bin@^0.69.0:
+  version "0.69.0"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.69.0.tgz#053159a684a6051fcbf0b71a2eb19a9679082da6"
 
 flow-coverage-report@^0.3.0:
   version "0.3.0"