Last month, with the release of version 3 of the AWS SDK for .NET, Xamarin and Portable Class Library (PCL) support was announced as an in-preview feature. We've worked hard to stabilize this feature and with today's release, we are labeling Xamarin and PCL support production-ready. This applies to Windows Phone and Windows Store support, too. If you've been waiting for the production-ready version of the SDK for these platforms, you can now upgrade from version 2 to this release of the SDK.
The immediate impact of this push is that the AWSSDK.CognitoSync, AWSSDK.SyncManager, and AWSSDK.MobileAnalytics NuGet packages are no longer marked as preview. The versions of other AWS SDK NuGet packages have been incremented.