XNA 4 released!
2010, Sep 17
Finally! This is a real milestone, the API changes were enormous (I was forced to change a lot of code in my crappy engine), but it’s definitely worth it
Shawn has a good list of blog entries (thank you very much Shawn!), for example this is one of the most important changes: State objects in XNA Game Studio 4.0
Anyway, I know you want it so here it is!