A clear 
from me on this - basically on my RTX20 card I see the following DLSS modes:
- Auto
- Ultra Performance
- Performance
- Balanced
- Quality
- DLAA
As it’s listed as a DLSS mode I guess it’s DL DLAA as the dumb DLAA is still in place for the AA mode besides DLSS lol. It’s swiftly mentioned in the changelog however:
Visually… well, It seems to deliver a bit of a difference compared to TAA (more fidelity, still ghosting)