A nice surprise in the form of a 3.38GB update to the PTS awaited us a few hours ago as Update 4.2 - Celestial Storm is now on the PTS to test out and squash any bugs.
I didn't go exploring too much as i'm doing the storyline from the word go to check for any issues but so far looks good, Crucia has certainly been busy building a few new additions to her army.
There's mention and achievements for building jetpacks so a form of flying comes to Rift?, we'll soon see.