The predictions I have read on this page, are very pessimistic...

I haven't transferred T3/T3 since end of September, (transferred 4 times in September, 2 times in August after the liquid ordeal) I have never experienced more than 15 minutes wait at the transfer security check point. UA has representatives pulling 1K/C pax out of the line and help you get up front.

If the line turns out to be enormous, go land side and use the fast track.

Please report back on how transfer was