According to Microsoft officials said the latest news, Zune HD will get in a few weeks v4.5 firmware upgrade, new firmware will increase the number of features. These include:

1. Smart DJ: This new feature provides users a more personalized playlists and music management functions.
2. Picks: to provide users with musical analysis and comparison of features, statistics of other Zune users can play content and give personalized recommendations.
3. TV View Zune music: users can use the Zune’s A / V interface Zune to connect to high-definition TV viewing and playing your favorite music and video.
4. Increase the video decoding format: MPEG-4 Part 2 increased support, including Xvid and AVI formats that can be played directly from the Zune without the need for transcoding.

via: tracingadget.com