I've just finished the update to XenForo 1.2
It's still a beta release, but it's VERY stable. I've been testing the beta builds for a couple of weeks now.
You will notice there is a new editor and a few other new features.
Once I've finished with the conversion, I'll be making some new How To guides on the new features.
If you don't currently see the new editor, you will need to clear your browser cache.