Update: Aaaaaaand it's live. You can download the latest version of Netflix here. It looks like it's on a slow rollout, so don't be surprised if you can't get it right it away.
Enhanced integration with Chromecast, including a new "Post-play" experience to easily continue watching at the end of TV episodes.
Confession: I watched four 90-minute episodes of Sherlock in a single sitting, thanks in no small part to Netflix's auto-advancing "Post-Play" feature on the web.