Thundgot, one of Blizzard's European CMs, is reporting that due to the one-two punch of patch 2.3 and Arena Season 3, more people than usual are logging on, resulting in queues on many realms that don't usually have them. So season two is over, and season queue begins (sorry, couldn't resist). I don't know if the North American realms are also supposed to be having queues; none of my regular ones have been, but I tend to play at off-peak times, so perhaps I wouldn't have seen them anyway. Who's been seeing queues, where are you, and how bad have they been?
Blizzard says they're holding off on doing anything about the queues, be it free transfers or new realms, but they promise that they're "closely monitoring" things, and if this proves to be more than a transient thing, measures will be taken, as usual. I remember back in the pre-BC days, when most realms had queues most of the time...that was no fun. But it seems that Blizz have learned from that, since I haven't ever faced anything that bad since BC launched.