FO's are still in Zone 2, along with 60% of the aircraft (the Amex Medallion crowd, those in EC, and, IIRC, those who've bought preferred seats). Thing is, Zone 2 is now referred to as "Zone 1," thanks to the inexplicably random decision to call Zone 1 "Zone Sky".
It's already caused virtual gridlock on one flight I've taken so far, with almost all of Zone 1 trying to board immediately after FC got on the plane, and the GA ultimately yelling over the PA that SkyPriority had to board in full before anyone from Zone 1 would be allowed on the plane. She didn't clarify beyond that, which led to plenty of head-scratching as those in Zone 1 tried to figure out what the heck the difference was; Zone 1 has always been SkyPriority...