Entity Framework uscirà con il SP1 di VS2008/.NET 3.5...
La notizia più bella per me è che il SP1 sta per uscire in beta... 
There will be an SP1 of VS 2008/.Net Framework 3.5, and the Entity Framework and its designer will ship with it. In fact, there will be a beta for SP1 coming out sometime soon with all of our bits nicely integrated with VS and the.Net Framework--no more install Orcas, then install this beta thing, then a patch, then another beta thing or whatever that song and dance was.
Fonte: EF will ship with SP1 of VS 2008/.Net Framework 3.5