Actually he didn't say "end of 2013". He said "later next year". I think that means it could be any time next year which would be later compared to now. Maybe I'm just being hopeful, but I'm guessing it would be an introduction at WWDC 2013. I'm going to wait it out until we see what Apple introduces to us before I seriously consider switching over. I grew up with Windows, used it since Windows 3.0, and now I absolutely hate all versions of that OS ever since switching to Mac 12 years ago. I'd really hate to have to go back, but I know I can't discount the prospect entirely. The system you've built does sound pretty awesome.