Middle of May would be my guess, end of April at the earliest
I say 12 of april, since this patch will only have 2 new hero dungeons and a new zone (that idk if its gonna be available)
this should be a poll
my guess is in 2 weeks from now
Why pull out over 1 month old topic with guesses that are based on assumptions which were later proven invalid?
4.1 maybe June... and 4.2 december..
26th for 4.1, Sometime in June for 4.2.