“Windows Server 2012 Foundation will only be available to OEMs and will come with a 15 user limit and no virtualisation rights.”
Isnt’t that a laugh? M$’s charges more money in relation to how much of your own IT you can use? Do we have parking meters in our garages? Do we have coin-slots on our refrigerators? Do we pay to use our tools? Those are silly concepts. So is that other OS in IT.
I recommend people use Debian GNU/Linux on clients and servers. It works for you and is not cripple-ware. You get the full power of your hardware for the cost of installation, ~$0, and there’s no per-seat/per-server/per-connection/per-CPU charge. None. It’s the right way to do IT.