You are soft of confusing 2 different things.
There is a new oil baffle/windage tray that everyone can upgrade to. It is well worth the time and effort.
Then there also is the new design oil pan.
"Technically" it could help a little with keeping oil next to the pickup under high rpm situations when cornering. "Technically" - Realistically it's just not going to make a big difference at all.
Not worth updating just for the sake of doing it.
Yes at first it was thought it had a lower capacity because of the shallower sump. However this is not the case.
The part about the shallower sump rising the oil level and increasing the possibility for extra whipping and foaming of the oil does make sense.
Maybe that's also why they have a much better windage tray design now too.