Patches are all the norm these days and so it should come as no surprise that one has been announced for Star Wars: The Old Republic. BioWare is often stellar when it comes to not needing software patches, but with an MMO, you can't always predict what humans will do to break certain things or what they will complain about. As a result, they present Version 1.1 to be released soon.
A lot of the patch fixes are minor little bug fixes, but there are some major adjustments as well, such as anti-aliasing, class adjustments, and a few new boss encounters.
You can view the entire patch list from the SWTOR Community.