This evening I read that Apple are retiring the Xserve. I guess that's a shame as I always wanted to see more of OS X in the server space. I think that this will relegate OS X to the SOHO market; unless... Apple permit virtualised instances of OS X.
Permitting virtualisation would be a very smart move by Apple. Let's face it, unless you can run on OS as a virtualised instance then you're never going to be a player in the enterprise and in the elastic cloud.
Time will tell if Apple see the merits of virtualisation.