DL v2 vs. DL 2 in Hog3 Library Files?

Recently loaded Hog3 PC (Version 3.1.5 - build 2773) onto my computer and by mistake found that there's another library file listed under highend for a DL v2 (Not the DL 2) fixture. I've never notices that fixture Library before and was curious if someone could explain to me what the difference is between the DL 2 and the DL v2?
I did noted that it has more Effects Modes assigned to the encoder wheels than the Standard DL2 library file.

Thanks,

Beammer -:)