Well lookie here, not only do we get SP1, Microsoft just released the June 2011 Cumulative Update. In fact, they recommend to install both, as both contain important features and capabilities. Note that the June CU contains fixes post-SP1, so the recommendation is SP1 first, then the CU. Note that the Foundation "stuff" should be applied first, then the Server ones. After that, run the Products Configuration Wizard on each box, and you're good to go.
Check out all the details here.
- M