<PackageReference Include="System.Reactive" Version="4.0.0-preview.4.build.391" />

API Differences between 4.0.0-preview.4.build.391 and 5.0.0-preview.220

72 Additions 100 Removals

System.Reactive

System.Reactive.Concurrency

System.Reactive.Disposables

System.Reactive.Linq

System.Reactive.Threading.Tasks

System.Reactive.Windows.Foundation