The acronym is WAR. As in Warhammer: Age of Reckoning. It hasn't been Warhammer Online since the last developer folded.

The ToK is pretty revolutionary as is the RvR system. City Sieges are unlike anything in any MMO and do a very good job of combining both PvP and PvE.

That is one thing that Mythic has planned extremely well:

The PvPers need the PvEers to succeed so that they can get enough Victory Points to lay siege to the cities and the PvEers need the PvPers to succeed so they can take advantage of the Raids and instances after the city falls.