Murkmire (similar to Craglorn) and Wrothgar should be coming relatively soon-ish. But srsly, we've had 6 months of nothing but PvE updates. How would you feel if the game hadn't been updated since launch? PvP'ers know how it feels. I would very much like them to do nothing but PvP updates for awhile until they are able to mostly fix the current content and add some new stuff, but unfortunately, you are the majority...
Adding more PvE is one of the few problems ZOS has NOT had.