I double-checked that this wasn’t released on April 1st, but Apple will be supporting a dual-boot configuration for Intel-based Macs that let’s you chose between Mac OSX and Windows XP SP2. The code name is Boot Camp and it’s currently in public beta. You need to own your own copy of Windows, but Boot Camp deals with the Mactel’s EFI (as opposed to BIOS that PCs use) and finding all the hardware drivers for your Windows install. More details on the Apple site. Crazy stuff.