Last night, the Nova Launcher beta received an updated to version 1.3 beta 3, which merges the already speedy launcher with the Jelly Bean base. A couple of the features that the Jelly Bean stock launcher has brought to the table is the ability to automatically move icons and widgets when placing something new on a homescreen, along with the ability of re-sizing widgets automatically. You’ll notice some slight speed and performance enhancements which is always something to be happy about.
If you’re running the market version of Nova, go into Nova Settings and hit “check for updates.” In the top right you will see the three dot settings button – select that then choose the beta option. The new application will download and you can simply install over the current Nova and you won’t lose any settings.