well, it will be on NA, when they give us an update. After about a year
All regions are behind from Koren on 2 big updates. In Korea, updates are released every month, and everywhere every half a year (i.e. all updates come at once for a specific period). Since we do not have an update of archers yet, we will probably only get it closer to February or we'll get an update with tanks (or together). Accordingly, the necromancers will come only next fall.