@frak_b: IBM uses PowerPCs for their blade servers. XBox, Wii and PSP3 feature PowerPC architecture. I think X86 is legacy hardware, not PPC.
There will probably be Linux on the X1000. An OS4 kernel developer more or less confirmed that. So there will be plenty of software. I can imagine a X86 Xorro card, too.
If you just want an original Amiga, then take WinUAE on a standard PC.