Probably never. As Mr McGibblets posted...Mastahg isn't interested in adding more PvP to the Bot. It's actually pretty shitty because the main selling page for RB does state that RB has FULL PvP support.....but that's actually a bold faced lie. This fact has even been pointed out to them in the past, but it's never been changed. So, unfortunately....don't expect more PvP anytime soon.
I'm actually glad there is no pvp bot. It's an easy way to get detected. Id rather just go in there with a class routine and beat on some plebs.
Technically, you can use Combat Assist while controlling movement in PvP, no? I agree that I would like to see it queue and run PvP on its own, but as history would show from HonorBuddy, that's one of the fastest ways to raise awareness about botting. I would either play manually in PvP or have Combat Assist (or Mud Assist) handle your rotation if you want to mindlessly PvP.