Hi,
System Center 2012 SP1 has now been released on Microsoft’s Volume Licensing Service Center at https://www.microsoft.com/licensing/servicecenter/home.aspx.  There is a huge amount of new stuff, and most importantly the products now support Windows 8 and Windows Server 2012. Here’s the list of the different applications and sizes:

• System Center 2012 with SP1 – Operations Manager Server English
• 32/64 bit
• 1059 MB

• System Center 2012 with SP1 – Orchestrator Server Multi-Language
• 32/64 bit
• 157 MB

• System Center 2012 with SP1 – Virtual Machine Manager Server Multilanguage
• 32/64 bit
• 1320 MB

• System Center 2012 with SP1 – Service Manager Server Multilanguage
• 32/64 bit
• 403 MB

• System Center 2012 with SP1 – ConfigMgr and EndpointProtection Multilanguage
• 32/64 bit
• 904 MB

• System Center 2012 with SP1 – DataProtection Mgr Server and Toolkit Multilanguage
• 32/64 bit
• 4720 MB

• System Center 2012 with SP1 – Endpoint Protection for Linux OS and Macintosh OS Multilanguage
• 32/64 bit
• 1151 MB

• System Center 2012 with SP1 – App Controller Multilanguage
• 32/64 bit
• 76 MB

Update: As MyITForum pointed out, there’s a few differences. They’re not seperate Service Pack 1 updates, it’s an inbuilt smart installer that can either update to SP1, or do a fresh install. I like that they’ve gone this way, keeps your source files much cleaner. More details here http://myitforum.com/myitforumwp/2013/01/02/faq-wheres-my-system-center-2012-sp1-upgrade-bits/