The Spring update it upon us. This is the most complete and official stuff that will be in the update coming the week of May 7th.  Some features that I like are here.

> Switchable aspect ratio now available during video playback (Auto to Letterbox, Zoom, Stretch, Native).

> Player and friends lists now quickly show session presence information for quick identification of users that are joinable.

> Support for streaming WM-DRM protected content from a PC.

> Folder view for video content on connected devices

> H.264 video support: Up to 15 Mbps, Baseline, Main, and High (up to level 4.1) Profiles with 2 channel AAC LC and Main Profiles.

> Added MPEG-4 Part 2 video support: Up to 8 Mbps, Simple Profile with 2 channel AAC LC and Main Profiles.

> The name of game in tray is now displayed in the dashboard.

More info at Here

I am Loving the H.264 support (no 5.1 though ), I guess Divx and Xvid support will never come