Silverlight 3.0 seems to be out, also the developer tools. It seems to be a day too early, as http://seethelight.com/ says "1 day left" at the moment.
It might be Microsoft preparing for the lauch party tomorrow or an error, no matter what they seem to be here both of them, which is nice!
Silverlight 3.0 Developer Tools
– Enjoy!
UPDATE: Just saw this on twitter, so it might be smart waiting a little: "@shanselman We’re in the process of releasing SL3. I jumped the gun-not ALL sites are ready. Avoid weirdness-wait til t’mrw morning."