As reported on a few sites:
Silverlight is going to be the technology of choice for CBS to broadcast their video broadcasting of the March tournament.
Users will be able to view the games in either a standard, 550 Kbps, broadcast using Windows Media Player or a hi-definition quality video with Silverlight, 1.5 Mbps.
On another note, there is now a Silverlight contest where you can win $5,000 and have your game featured in ServerQuest II. For more information, check out the site at http://www.serverquestcontest.com/
For the contest, the requirements are: