235 people on the WoW dev team, expansions planned after Legion, movie, possibly more movies, new books... Overwatch is a different genre...
As for what those 235 people are doing, as we can see in the interview the whole speeding up content idea failed horribly but instead this massive amount of people are creating more things than ever before in the same expansion so hopefully we'll be seeing a lot more details and things to do coming up.