Should I wait for MoI 3?

 From:  ESMP
5443.1 
Hi there! I was considering on buying MoI 2, but since the third version is already on beta... would it be better for me to wait for 3 to be released? Or would it take too long... I mean, if it's going to be at least 6 months until release, then going with 2 is ok.

Or seen from another angle... anybody knows what are the pricing plans for full / upgrade licenses?

Thanks!