Of the current 240 US servers (I may be off by one or two) currently 158 have been merged/have been announced to be merged soon™.
Of the 82 servers remaining to have any news announced about being connected:
28 are low population, 33 are medium, and 21 are high population.
38 are PVE, 26 are PVP, 12 are RP, and 6 are RPPVP.
This means that of the 17 RP servers, only 5 have been merged, and of the 6 RPPVP servers, none have been merged.
Just thought some people would like to know,
-A priest on a very empty RPPVP server, which seems to be the lowest of Blizzard's server priorities.