We're launching the first CTP of SQL Server Everywhere today!
SQL Server Everywhere is a new, lightweght database you can load within the process of your application. We first announced this new SKU a few months ago, and it's an exciting addition to the SQL Server platform, providing a great solution for apps that use and keep data, but don't need a "server" per se.
If you're a data application developer, this is a release you should familiarize yourself with.
Download: http://www.microsoft.com/downloads/details.aspx?FamilyID=85e0c3ce-3fa1-453a-8ce9-af6ca20946c3&displaylang=en
Details: SQL Server Everywhere CTP Books Online
Steve Lasker's post is also worth a look: http://blogs.msdn.com/stevelasker/archive/2006/06/12/SqlEvCTP.aspx
This time I am not just trying to draw your attention to this post, it has really RTM'ed!More information here.
Together with the announcement of Windows Server 2008 they have also announced Windows Vista SP1 here.
They will probably be available somewhere next month so just a little more patience.