I will be able to check as soon as it arrives, which will be prob anything between a week and a month now 
So yes it does fit the 1st batch it seems but YMMV of course since there are a dozen small revisions of the FW3A floating around. It is a shade darker like the newer FW3A’s but it’s hard to tell in person and I suspect when I put the SS bezel on shortly it will be even harder to notice.
I just received a new bare aluminum FW3A from Illumn, it has the tail retaining ring so I know it’s a newer run. I have noticed that this model has a gap in the clip ring area and the clip can spin freely, it has already scratched up the body quite a bit. My other FW3A is from the first SST-20 run and it has no gap and the clip cannot move. Has anyone else observed this behavior? A little disappointing.
Great photo to put things in perspective 
And thanks for the info! I recently ordered both tubes to put in the FW3A and 1A and it is good to know they’ll work!!!
Where is the rubber ring? If it’s not there or it’s too small, you can add one so it won’t spin.
The new models do not include any rubber ring for the clip and on top of that they now put solder blobs on the back of the switch PCB so the tail wont even crank down as much. I think both of those issues lead to this.
Not sure, but it would probably at least need to be updated to support Anduril config files.
It really hasn’t had any meaningful updates since it was first written. Just barely enough to allow it to compile after changes in FSM.
Is anything known about the other colors of the 18350 tube?
I would like to have purple and copper.
The FW3A family has the upcoming addition: Stainless Steel !! …it will be called FW3S
Very good looking.
Of course it'll heat up quickly, but it's still tempting.
copper version the polished is sold out now according to lumintop on facebook.
according to statement by lumintop the short tubes won’t be available until further notice with other colors or materials than the standard gray fw3a unfortunately:
“We regret to tell at present, we have no plan for the blue/sand/raw/green/purple and titanium/copper short tubes yet. Because the total volum is not as much as the color grey version, so if we made the colors short tubes, the quantity will be less, thus the cost will be high.”
too bad 
fw3a and fw3t on holiday at the beach
Are they just willing to sell the bezels for tail-cap and head?
18350 tube does work with the first batch FW3A without any issues.
And the 18500 tube, and the SS bezel and the deep carry clip also work perfectly with the 1st batch of this light!!!
(P.S. nevermind the light temperature of the photo, it is not balanced and is under a lower than 4000K ceiling lights)
BTW:
Hi. Today I received my FW3A SST20. In the package there is warning to not dissamble the tailcap, but when I tried to unscrew it, it was very tight and I could not to remove it. Do you have idea if in the last batches of FW3A the tailcap is maybe glued?
It should have a retaining clip that holds down the tailcap parts. Look for a black ring.
I can’t just unscrew at all the taicap. Any suggestions? OOps 
it was just very tighten.
Finaly managed to unscew it.
you did read the notice to open the head to insert the cell and NOT the tailcap?
Mine was tight, but no glue.