The RTM builds of Windows 8 are on MSDN and TechNet. Please remember that:
- MSDN is for development purposes
- TechNet is for trial and evaluation purposes
These licenses are not legit for production usage. You wait for MSVL (tomorrow if you have SA) or GA (if you don’t have SA) if you want production licenses. Partners with internal usage rights are due to get access tomorrow.
There is no sign of Windows Server 2012 RTM yet.