1). When you buy TV3D v6.3, you get access to the 6.5 beta too?
2). How is C# supported in TV3D? Is it a .NET assembly thats
wraps the engine?
3). What tools are included with the beta version? model viewer, shader tools, etc?
4). Is there any documentation for 6.5? (this doesn't sound promising after reading the forums)
Thanks.

1. Yes
2. Yes, a managed wrapper around the C++ lib.
3. Yes, and also a particle editor.
4. Nothing official yet. The wiki, the forums and IRC are your friend.