Apple had finally released iOS 4.3 for Apple TV 2, adding the ability to stream purchased shows via iCloud (I'm betting this is US only?) and watch Vimeo video. As noted by Apple:

  • iTunes TV Shows: Purchase your favorite TV shows directly from the iTunes Store, and watch the shows you already own, commercial-free in HD.
  • Vimeo: Browse and play videos from Vimeo, access your video inbox, and mark videos you want to watch later.

If you've gotten the update, let me know if you notice any other changes and/or improvements.

(Developing...)