I just flew it today actually, and noticed that it is a bit more roomy than exit row. I am only Ascent, and from what I understand it is not free for us - only Summit? I got the seat from the GA.

I've heard its only free for Summits at T-24, not at booking and that Ascent's pay a small fee. Anyone know? I can't find info online. All I know is that 2 of my reservations where I was sitting in row 1-4 were reassigned.