A Major Feature version of ApexSQL Diff API 2008 with SQL Server 2008 support has been posted
Use the following link for downloading
Here are the complete release notes for the new version
About ApexSQL Diff API
ApexSQL Diff API programmatically compares and synchronizes SQL Server database tables, views and all other SQL Server objects as well as database data. Compare databases programmatically from your custom application
July 7, 2009