Its actually, "Hey! Come on now!"
Thats what the guards in Oblivion say if you are shooting them with arrows continuously while running backwards, while they try to catch up to you to say, "Stop! You violated the law!"
Anyways, I'm very not surprised that TESV isn't featured in Bethesda's E3 lineup. Pete Hines himself suggested that E3 isn't that good of a place to announce games.
I think they are going to announce it sometimes over summer, with a showing off at QuakeCon.
By the way, when is the last possible date they can announce it before the trademark expires?