The guy who does this for MLB, Kevin Barnett, actually blogged about it last week. They've been working on this since MIX07, and demonstrated the full vision in the keynote. Kevin has some interesting comments about what it was like working with the early bits.
It's a beta version, but it's nice to see a big site like this taking a dependency on Silverlight before it's officially released. Stay tuned for more developments!
Comments have been closed since this content was published more than 30 days ago, but if you'd like to send us feedback you can Contact Us.