Fellow MVP, Johan Arwidmark (@jarwidmark), just tweeted that he saw SysCtr 2012 SP1 on the VLSC site. I just checked. He’s right:
TechNet is for evaluation and MSDN is for test/development/demo. What you download from the VLSC site is for production usage … and for managing Windows 8 and Windows Server 2012 (including Hyper-V). This is also the release to integrate with Wave D of Windows Intune.
This is not an R2 release, it’s a service pack. So if you bought System Center 2012 then you’re entitled to this update. Please don’t assume anything about “upgrades”. Some features of System Center can be upgraded (Operations Manager – see Kevin Greene’s series of posts). Some cannot be directly upgraded (see VMM).