Add note to default implementation package's README

Author: stuartmorgan-g

packages/google_maps_flutter/google_maps_flutter_ios/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 2.17.1
+
+* Adds a README section about Swift Package Manager and the new
+  `google_maps_flutter_ios_sdk*` packages.
+
 ## 2.17.0
 
 * Restructures code to prepare for SwiftPM support.

packages/google_maps_flutter/google_maps_flutter_ios/README.md

@@ -1,6 +1,9 @@
 # google\_maps\_flutter\_ios
 
-The iOS implementation of [`google_maps_flutter`][1].
+The default iOS implementation of [`google_maps_flutter`][1].
+
+This package will use Google Maps SDK 8.4, 9.x, or 10.x, depending on your
+application's minimum deployment target.
 
 ## Usage
 
@@ -11,6 +14,15 @@ your app when you do, so you do not need to add it to your `pubspec.yaml`.
 However, if you `import` this package to use any of its APIs directly, you
 should add it to your `pubspec.yaml` as usual.
 
+## Swift Package Manager
+
+This package cannot support Swift Package Manager, as Swift Package Manager
+does not support automatically selecting the appropriate version of the
+Google Maps SDK based on the minimum deployment target. For Swift Package
+Manager compatibility, you should use the appropriate
+[`google_maps_flutter_ios_sdk*` package][3] instead.
+
+
 ## Supported Heatmap Options
 
 | Field                        | Supported |
@@ -23,3 +35,4 @@ should add it to your `pubspec.yaml` as usual.
 
 [1]: https://pub.dev/packages/google_maps_flutter
 [2]: https://flutter.dev/to/endorsed-federated-plugin
+[3]: https://pub.dev/packages?q=implements-federated-plugin%3Agoogle_maps_flutter+platform%3Aios

packages/google_maps_flutter/google_maps_flutter_ios/pubspec.yaml

@@ -2,7 +2,7 @@ name: google_maps_flutter_ios
 description: iOS implementation of the google_maps_flutter plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/google_maps_flutter/google_maps_flutter_ios
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+maps%22
-version: 2.17.0
+version: 2.17.1
 
 environment:
   sdk: ^3.9.0