Hi
(1) For what language (so vb?vb.net?C++? etc) will there come a bot development kit?
The official Bot SDK will probably be made in C or C++. But someone could write wrappers for other languages if necessary.
(2) Will there be any restrictions while making your bot? (while programming)
I'm not sure what kind of restrictions you are talking about, maybe you could explain this a little more.
(3) Will there be an official bot world, will there be build options too (which we always missed in Active Worlds)?
Probably, but I'm not sure about the building rights. You could still just ask for building rights.
(4) Will there be an official bot team, and which lang. must they know then?
If there will be a bot team they would probably need to know some C and C++. Unless there's a bot SDK wrapper for another language.
Some of the answers to your questions may change in the future but this is as it stands right now.