I've installed the Express edition beta 1, but I have interesting to the Professional edition. I thought the Professional edition should have more classes than Express edition, but I've never seen any documentation to compare the class library of each edition. Could you tell me the differences of them, particularly about class library Or I'd be happy if I could find the reference manual of XNA Game Studio Professional on the net.
Thanks,
Hayashida

What's difference between Express and Professional?
Hemant Hindlekar
Harkernator
yxrkt
http://msdn.microsoft.com/directx/xna/faq/
From the FAQ:
XNA Game Studio Express is still in beta and is expected to be released this holiday season. XNA Game Studio Professional is much further away from release. As such there is very little information currently available about the additional functionality that it offers over GSE (although if we're lucky, some XNA staff will jump in and spill a few beans :-) ).
Andy E
jerfoo
Jarda Jirava
See your other post.

Oh, and you don't have to pay for XAct so you're still incorrect.
ehsan sadeghi
Chris.Stewart
enric vives
What do you have to buy that had functionality removed that was in DirectX Game Studio Express is free. Since nothing else has been shown, I call BS on this.
EsteemDE
The FAQ states that the pro version will be for signed developers with dev kits, which kind of restricts who will ever be able to use it (and probably talk about it)...
Q: What if I have an 360 Developer Kit – can I use the XNA Framework with a title that I intend to send through certification
A: We will be releasing XNA Game Studio Professional next year which will support the creation of commercial games on the Xbox 360 using an Xbox 360 developer kit.
I would assume that lots of 'dangerous' things like native calls will be possible, hence the restriction. Of course we won't really know the score until the pro version is properly announced.
jimcjr
It's already been stated support for additional languages is planned for future versions. There's no way they could have done more than one language.
Most of that "extra stuff" is for 360 development.
LAPM
Martin Smith
Taliesin*
EDIT: Let's leave this in the other thread, since this one was about the cost of XNA pro... :D