It's been a long while since we've heard anything about Google TV, but the platform just got its big promised upgrade to Android 3.1, complete with an overhauled UI and support for apps from Android Market. Google says the new, more realistic goal for its TV efforts is to complement traditional TV services like cable and satellite with alternative internet viewing options, and to that end the company is bundling in a new TV and Movies app that functions as an integrated program guide with the ability to aggregate content from multiple sources, including live TV, HBO Go, Netflix, and YouTube. The YouTube app itself has been updated to feature dynamic "channels" that begin playing related videos as soon as you type in a search term—think Pandora for YouTube. These content-discovery features are the main focus of this version; Google told us that the apps and Market element will take time to build into marquee features.