The new light uses a whole new head, new optic, new LED, basically a new design. I think it would have made sense to name it something else perhaps, logically?
I am sure it's a great light no matter what it's named. I understand wanting to keep the Hound Dog heritage.
To shift gears, here the 'original' Hound Dog - actually it's the XML generation that does 900 lumens in Neutral mode. I like the bicycle handle grip modification as well as the surefire tailcap modification, they just seem to play well with each other. The rubber grip sticks to your hand, has a perfect diameter and doesn't get cold in the winter time as does metal.