Let me just answer this question, and I will try not to scream too much:
WILL HAWKEYE #21 BE OUT ON WHATEVER GODDAMN DAY? (At current moment, December 10th)
Here’s your freaking answer: Google it on THURSDAY. This Thursday. Any Thursday: Thursday is when previews come out. New comics on Wednesday, previews on Thursday. Or hell, if you can’t be arsed to Google it, scroll this tag on Thursday, ‘s what I do. If you see an unlettered preview of it THIS THURSDAY then the following Thursday is a lettered preview and the Wednesday after THAT you have it in your hot little hands.
No preview? You’ll be waiting longer than 2 weeks although SOMETIMES there’s an uncolored lineart preview at the three-weeks-to-a-month mark. Not always. You can damn near bet the farm on colored preview at two weeks out, though.
Seriously: colored preview, you’ll have it in two weeks.
No preview of any kind on Thursday, it is at least three weeks away. The end.
It takes Aja about three months to do an issue of Hawkeye, and if you don’t think it’s worth waiting for then I just don’t care about your opinion. Go whine to the George R.R. Martin fans or something.