I say if you want to make music now, get the new Imac. It will serve you for years to come and when the dust settles on the new silicon, then it might be time to upgrade again. Plus, who knows if any of the software will work when it the new ones come out. I remember when Apple switched to Intel, is was disaster for some companies to update their software. I know a few freelance developers decided not to upgrade some of their plugins to Intel code.