Yes, Tim said so yesterday
/s
We have no idea. The closest thing we can do is to follow and see what might happen to/at WWDC, as it was rumored to be introduced at that point... which is not equal a launch date soon.
But if you want overear noice canceling headphones there are plenty of good models out there. And considering we have no idea how apples will be, you should maybe look for something else if you need at pair in the near future.