From what I have heard so far, typically toward the end of one day, they will start a 2nd line for the next day. When that starts, there will be someone handing out wristbands. They'll continue to do that till 1am and then start again at 5am. So the forming of the line for the next day will be done the same way it's always been done, just that now they'll be handing out bands when they do it, and continuously except between 1-5am.
If that's the case I think getting in line around midnight probably should still be ok.
I'm looking forward to my 10th straight Con but I am also thinking the decision to take a break after this year was a good one.