Apple uses Sun technology for Leopard

After the excellent fscklog directed me to the preview pages for Leopard I was somewhat stunned, when i´ve read the Apple website regarding Leopard a.k.a 10.5. Apple integrates a cornerstone of Solaris 10 into it´s new operating system. DTrace made it into my favorite desktop operating system:

And Time Machine is the cooolest interface to snapshots ever. Something tells me, there is another component of Solaris in Leopard. Do you remember the the rumors about ZFS in Mac OS. I have the feeling in the gut that the Time Machines leverages ZFS snapshots.