By now, you have probably seen the announcement of SQL Server Everywhere, and you may wonder what exactly this is again. Well, one statement from Steve Lasker's blog says all:
"SQL Server Everywhere is the SQL Server Mobile edition product with its limitation to the mobile platform removed."
So, this is exactly what everyone has demanded who has ever seen SQL Mobile, and has wondered why the heck it can't be used in ordinary desktop applications. We have been listening to you!