The new "Discover" tab will allow you to browse YouTube channels by category, making new channels and content easier to find and preview. That's half the fun of YouTube, especially on your big screen. The channel pages themselves have been overhauled as well, making it easier to navigate through playlists and subscribe right from the channel page. Specific functions for the Google TV remote have been added that allow scrolling through things like related videos, and the information screen where you can thumbs up (or down) a video and comment without leaving the page. As a user who watches a lot of YouTube, this all looks really great.
Could this be part of the "big announcements" that coming up for Google TV? That's a possibility, even though we all want to hear hardware news the software is just as important. Maybe even more so when we're talking a set-top box, where entertainment and content is the focus. We've been hearing about a big push for Google TV from the folks in Mountain View for about a year now, and it looks like they may be starting. Bring it, I say. Hit the break to see some more previews of the upcoming update, which will be available in the GTV Market soon.