There are 40 source servers and 15 destination servers listed in the table. This transfer and eventual merge will affect every server except Phoenix Throne, which is widely regarded as the most balanced and stable server for all of Warhammer Online.
Perhaps the most interesting part of all this is a speculative tool called the Warheap active server list. If you look at Mythic's official list of destination servers, you will notice that they almost identically match the only servers listed on Warheap with active rank 40 RvR taking place. We were originally sceptical about how accurate this tool was but now we're believers. The only question remaining is how accurate the activity numbers really are. (Incidentally, they are scraped from Mythic's very own Realm War site.)
Some people may take this news negatively, but WAR subscribers have been begging for server merges for months now. It appears they are finally getting their wish, which can only improve the game. You need people to RvR with, right?