There is still no formal statement from Microsoft.

A quick version history:

RTM – Nov 7, 2005

SP1 – April 19, 2006 ( 5 months )

SP2 – Feb 20, 2007 ( 10 months )

SP3 - ? -> 13 months and counting.

Given that the two prior service packs include loads of new features that in reality haven't been patched, it would seem to me that SP3 would be a priority. I can understand that everyone is busy preparing for the release of SQL Server 2008, but that is not a good enough reason to forgo support on an existing package.

Sincerely,

Dan B