The head has actually been around for while, but was LE only for a period of time. I guess with enough demand they released it to the public.
What is the threaded adapter?
FYI, for dudes who want more batteries, Illumn is the secret spot for them. Skip paying $35+ for a 2 pack, you can buy them for $11/ea at Illumn. Stick with batteries that have a 10A discharge and you'll be good to go.
https://www.illumn.com/batteries-ch...ah-sanyo-ncr18650ga-protected-button-top.html
That might be cheaper than dealer cost. Good deal. Thanks for posting.