Originally Posted by CyBeR

As per the seat map I posted on the previous page, those are indeed purple (= "Seat at the front of the cabin") which are chargeable, but almost no one voluntarily pays for those so they tend not to fill up before OLCI.

Though now that they have an additional benefit of more legroom compared to seats farther back, I wonder if that will change. I have one flight booked on a 321neo and it has quite a few of them taken already, but it's the inaugural flight so I'm sure I can't use it as a benchmark.