Inventor 2011, service pack 1 is now available from Autodesk. They must have been in a hurry to post it, looks like they forgot to update the copy-n-paste references to Inventor 2010.
Check out all that’s been patched via the readme.
Permanent link to this article: http://cadtoolbox.com/2010/08/27/inventor-2011-service-pack-1/