Right... no more "Mister 1.1", no more Alpha - Silverlight 2.0 Beta is expected in Q1 2008 (@Mix?), bringing a rich set of controls (including DataGrid!), higher level of WPF UI framework, more connectivity options and richer BCL support. This Beta is expected to include a Go-Live license.
Read the full announcement on ScottGu's blog.
While on a subject, Silverlight 1.1 Tools Alpha for Visual Studio 2008 [RTM] were released a couple of days ago.