Last week I mentioned in passing that Service Pack 1 is now available, while I was blogging from the PASS Summit keynote. I wanted to put up an official post instead of having it appear as a footnote there (I also updated my April Fools' joke to point to the right place).
Service Pack 1 Details
Service Pack 1 is build # 11.0.3000 and includes 13 fixes to public KB items and 35 other internal (VSTS) items. You can see the list of fixes in KB #2674319.
You can also read about new features included in SP1 (well, first included in SP1 CTP4) on the Analysis Services team blog or in Books Online on MSDN.
You can download Service Pack 1 from the following URL:
A Caveat for Slipstreamers
The download page currently offers slipstreamed ISOs. However, another knowledge base article claims that, at least at the time of writing, these ISOs do not work. See more info in KB #2783963 - but for now I would suggest just downloading the standard SP1 installer (SQLServer2012SP1-KB2674319-x64-ENU.exe or SQLServer2012SP1-KB2674319-x86-ENU.exe). I haven't tested it, but you should still be able to build your own slipstream installs by combining these standard installers with your existing images, the "old-fashioned way."
Fixes from Cumulative Updates
Due to the length of time that goes into testing a Service Pack, SP1 includes only the updates from Cumulative Update #1 (11.0.2316) and Cumulative Update #2 (11.0.2325). So if you are relying on updates from Cumulative Update #3 (11.0.2332) or Cumulative Update #4 (11.0.2383), you may want to hold off on Service Pack 1 until the first post-SP1 Cumulative Update is available. Typically this is advanced so that you're not waiting an entire Cumulative Update cycle (~8 weeks), so I would expect it well before the end of the year.
The SQL Server 2012 SP1 Feature Pack downloads are also available:
SQL Server 2012 Express Edition Service Pack 1
If you are looking for Express SP1, general web searches will probably lead you through a bunch of registration brouhaha - here is a direct link:
The most interesting thing about the Express release, to me, is that now the full version of Management Studio is completely free. The Express download page says that it includes Management Studio Express, but I have installed this, and it actually installs Management Studio proper with none of the limitations you are used to. Obviously some of the features that didn't exist before still don't make sense when you're only managing an Express instance (e.g. SQL Server Agent), but now you can use the free version of Management Studio to fully and properly manage all editions. Other tools such as Profiler and the Database Engine Tuning Advisor are now included also.