Indeed. ZFS is absolutely going to rock as a filesystem. I can't wait for it to make headroads into Linux space.
Too bad MS so ruled by the NIH syndrome that they won't support more than just FAT/FAT32/NTFS.
ZFS comes from Sun Solaris Unix which isn’t license compatible with Linux like OSX is. You’ll have to run it outside the kernel through some sort of compatbility layer that kills overall performance. I’d recommend a full switch from Linux to OSX, Solaris, or BSD instead so you can run it natively and leave those GPL headaches behind, apparently they’re only going to get worse when version 3 comes out.