Seems like there's so much more active development for 1.5 when it's not even really out of the starting gate. An example is some anti spam code someone wrote. Someone else then commented that the feature had been built int0 1.5, but then someone else added, almost as an afterthought, but useful for those still on 1.2.x.
I thought it should be assumed that the latest stable version is what one should be actively creating for. Isn't 1.5 still in alpha, not beta, anyway?
Simply put, as a happy 1.2.2 user, I sometimes feel like a bastard child at a family reunion!