We've officially announced our existence today!

The press release is at http://www.microsoft.com/presspass/press/2006/may06/05-31VSDatabasePR.mspx

The technical info is hosted at http://msdn.microsoft.com/vstudio/teamsystem/products/dbpro/default.aspx

I'll be posting lots more info soon - and look forward to releasing our public Community Technical Preview (CTP) soon!