I guess it's safe to assume that the IBM chip will make it's way into Macs sooner or later. What I am concerned about is: how different are they design wise? From what I heard I'd bet they are not similar enough for code to run on both unchanged. So, what is going to happen if this assumption of mine is true - how long will Apple support the G4 with software and how is the 3rd party software situation going to be? New versions of software only being released for the new architecture but not the old one anymore? Is it in that light, while not knowing what is going to happen at all a wise decision to buy a new Mac now which I'd use for a few years to come with the fear that I won't get updates for a lot if not most of the applications I use in a year from now as they are only being released for the new architecture? Any comments or rumours in that regard floating around?