Yup, Pop is queens now with some rooms that have a king. All Stars are not.
Pop has an interesting set up with the one queen bed pulling down from the wall. It's actually a nice set up; it gives you more room when it's up. Don't think the mattress was different since it was the same thickness, but I made my brother take the one that pulled down, so I wouldn't know...
I find that the mainland branded hotels (ilton & Marriot) have queens, but then all of the ones in Hawaii are like that with double beds. Benefit to Aulani...queen beds at a luxury resort. Makes much more sense.