Within the IP.Board forum section, could a dropdown box be added for members to choose the board version they're referring to because as we know, there are a lot of differences between 2.3.x. and 3.0.x and if I (and others) are trying to offer assistance to other members, I find I'm always asking what IPB version they're querying.

I would have suggested sub-forums but this can get complicated and look messy so a simple dropdown box like there is in the Tracker would be good :)

A couple of incarnations back, this board had such a field. Not everyone used it. However I agree with you. I always assume the latest unless specified to the contrary.