For anyone that uses the Apex or Nova third party launchers, you can go pick up their updates in Google Play this morning. For Nova, there are a ton of fixes and it also adds in some Jelly Bean goodies and “Project Butter” improvements. As for Apex, it’s pretty much the same. Lots of fixes, Jelly Bean improvements, but it also adds the ability to force the tablet UI on your homescreens.
As a note, there are reports that the Apex Launcher update has something wrong with it and is force closing a lot. You can rest assured that the developer is working on a fix and will release an update as soon as humanly possible.