XNA Game Studio 3.1 (...) will contain the following features: support for customized Avatars, support for Xbox LIVE Party features, video playback, updated audio APIs for “fire-and-forget” scenarios, support for XACT3, automatic XNB serialization, XNA Framework multi-targeting in the Visual Studio 2008 and/or Visual C# 2008 Express Edition IDE, downloadable content for Xbox LIVE Arcade titles that use XNA Game Studio 3.1, consumer notifications when an Xbox LIVE Community Game that they have purchased has been updated,” revealed Microsoft's Aaron Stebner.