The Zune HD was stuck for quite some time where the Windows CE was holding the entire Windows Mobile UI in a post-stylus world. Now there are more and more people looking to take that old device further than it has yet to go. The Liberate 1.5.1 is the newest update of the ongoing Zune HD Liberate project. The Liberate project for the Zune HD they have stripped the fancy OS into the original OS and are running a CE 6.0 version of it’s web browser. This all allows for greater functionality on the Zune HD and opens it up to more apps as well. It would allow people to use Foxit Reader, Opera Mini and Pocket Word. Hioefully as we look further into the future it will open up for game apps.

Sources: Engadget ZuneBordsForums