So each light has all the aux colors?
I’m thinking that “main LED tint x 7 aux color x 3 body colors” would be way too many sku’s for anyone to stock.
Color me impressed. I’d passed over the D4 before… now, subscribed. 
How about a limited run with trit slots on the body and cap? 
I’m guessing it means “pick your aux LED colour when ordering, and then the settings for that one colour of aux LEDs are configurable on the light”, but I could be wrong.
edit: looks like I was wrong.
Colour me pleasantly surprised.
The only size difference is the tailcap, which is 3mm longer than then D4V1 tailcap, due to the magnet space.
It’s with the latest anduril ui from TK.
Most likely, it should be compatiable, but we are not able to 100% sure since there are many different batches for the D4V1.
TK updates it so quickly that it’s hard to tell what the latest is 
Personally, I’m looking for at least version 420 from 2019-05-22, but I think the improved stepdown was merged two or three versions after that (and to my knowledge, the latest is revision 428 on 2019-06-02).
edit: and here is a more readable changelog.
Awesome that V2 is coming! Can’t wait!!!
I haven’t even received my latest D4 yet and this comes out…
And 424 offers manual memory, which I find to be a huge improvement. Prior to 427, that has to be enabled at compile-time, but it’s the default now.
Excited to buy…
Hank are you have any plan for 21700 in your product ?
Yes, sure, it’s under developing.
Looks great… But I wish it had higher regulated current. I would rather have a 4mm longer light to accomodate 6 more AMC 7135 chips on the cell’s side of the driver, like the FW3A. 750+ lumens vs only 150 lumens regulated current.
I’ll pass on this one.
Please let this one have a FET+6+1 driver or something in that range?
Will titanium version of the D4v2 be created?
Damn. I was done buying flashlights… Spent so much money already lately on lights and trits, but got to have one of these. My smooth green D4 deserves to become a shelf queen.
Nice work Hank, in the lead for best pocket rocket in the market again.
It’s still FET+1×7135 driver