We announced this awesome toolkit with the RTM of Silverlight 2 and shipped the first drop at PDC, just a few days ago.
Well, we crossed the 10k downloads barrier just after 6pm last night (happy Hhalloween) and are close to 11k this morning.
Shawn Burke, the Product Unit Manager for the Silverlight Controls team has tons of information on his blog.
Silverlight Toolkit Now Available For Download
Silverlight 2 Released - Silverlight Toolkit on the Way
Get info on the controls Roadmap
PDC Silverlight Controls Roadmap talk and materials
This toolkit release under MS-PL has a bunch of controls that will only continue to get better release over release including Charting controls, layout controls, treeview, and much more.