So based on Apple's release cycle we should be seeing 10.6 in a year and a half to two years. My prediction is that we won't see a 10.6, or at least a 10.7. I think OS XI is up next. Here is why: It is pretty much the general opinion that Tiger was pretty solid and stable, Leopard brought an infrastructure for the intel machines and core animation, as well as some cool new features. The could continue to tighten up the OS through future releases but to be honest I don't believe that desktop OS' are very long for this world. I believe, like many, that the web based OS will dominate in the next few years, leaving Apple in a position to either continue to upgrade its desktop OS, or to jump ahead to OS XI as a web based OS. I just don't think the OS X line will last up to 10.10. Any Thoughts?