Correct. Edge 0W-30 and 0W-40 A3/B4 are currently 25 - 50% PAO-based, with the rest being Group III -- the PAO-based "German Castrol" A3/B4 has been discontinued. Other Edge products seem to be Group-III-based. There is a PAO-based Edge 0W-30 C3 but it's not available in the US.
Originally Posted by buster
If I had to guess the Edge oils are largely III based. Maybe some IV/V but I don't know. The 0w40 is PAO based.