Microsoft released the v4.3 firmware update for Zune HD players and it includes the following additions and fixes:
Support for the upcoming 3D games and applications.
Auto Suggest feature for text input.
Faster web browsing experience.
Keyboard option has been added in the settings section.
New toggle between seek and presets under Radio.
Under the Internet in settings, you can now toggle to default mobile or desktop webpage layout.
Artist bios are updated; embedded links to other artists in text.
Other bug fixes.