I'm still indifferent...
I don't think this has to be a bad thing to be honest, as long as it is optional. To be honest I'm a bit confused because it almost sounds as if MS will drop support after one year or so, forcing you to upgrade no matter what.
Even so, I'm still indifferent. We replaced our Windows server with FreeBSD, Samba, Apache, mod_mono and PostgreSQL several months ago and so far so good. Heck, instead of having to get extra (heavier) licenses in order to utilize a VPN all we had to do was "make -C /usr/ports/security/openvpn install clean", configure the whole thing and wham.
Of course the downside to all this is that hardly anything exciting happens anymore during updates :P