Isaac Kunen over on the SQL Spatial Team blogs about their upcoming Builder API feature in SQL Spatial. If you're a developer interested in building Virtual Earth applications you'll want to take a close look at our upcoming release of SQL Server with its geometry and geography data types. Very cool stuff. Follow this link to get more information about this as well as some links to a few articles he's written about it.
PS: If you're going to Tech Ed Orlando he is giving two sessions DAT316 and DAT320. Details here: