About Microsoft making their own computers: I think they actually are, if you've followed the Longhorn hype, you would probably have seen the prototype, it's been mentioned in the media as well, at least here in Denmark. It's kind of Mac'ish, has a widescreen and a placeholder for a handheld PDA and a webcam. I've seen it several times on various screenshots found via winsupersite.com I think...otherwise look at osnews.com, neowin.net, xbetas.com and geeknewz.com, they usually post stuff like that there.
Regarding the iPod, I won't buy it unless it supports other audio formats than AAC and as long as I'm forced to use iTunes. I want it to pop up as a harddrive where I can dump my files on it. Shouldn't Winamp 5 be able to play AAC files? It let's you rip a CD to either mp3 or AAC...?
There are rumors which I believe are true, that a x86 version of Mac OSX exists. Sort of a backup for Apple, if the s*** hits the fan...it goes under the codename Marklar, which is a word we learned watching South Park

Try to search Google. It would - as I understand - be rather easy to make an x86 version of Mac OSX, I think I've read that all that was needed was to write a bunch of drivers for various hardware. Mac OSX is an Apple's twist to an already existing FreeBSD OS called Darwin which itself runs on the x86 architechture...
But for the time being, I don't think Apple even consider going public with a x86 version of Mac OSX, the pretty GUI, the ITMS is just PR to make us buy their (too) expensive hardware, and it seems to be going OK. I use Mac OSX on a daily basis at work, and I'm not that impressed. It doesn't complete me as my Wintel machine does, as I don't feel I have the same freedom on a Mac as in Windows. The apps on Win and Mac are the same - only fewer on Mac, and even though there are differences, they're hardly noticeable. Usually just a matter of keyboard shortcuts.
For the Linux freaks out there, check this link http://www.maconlinux.com