That 18350 tube looks nice. Now we need a deep, *deep *clip, Hank 
A note, the D18 has disappeared from the Flashlights page again like the D1 did recently:
https://intl-outdoor.com/led-flashlights.html
Still available if you go from the front page, though,
E21 and redesigned clip, deep carry and straight lines not look like itās been taken from another torch would be my grail.
No clip version or additional spacer please.
Mike
I really like the looks of the new clip, it makes the KR4 look very handsome. But I must admit that I do not clip my EDCās very often, so what I like is not biased much by awareness of usability. 
+1, I remove the clip from almost all my lights, I donāt use it and it makes the flashlight bulkier
Guys, i think removal of clip is not an issue here wonāt you say?
Bigger problem is the clip people like to stay there. Look is not the biggest nr.1 here as much is how deep it can go into pocket. Slim is essential, deep carry.
if you donāt want it, remove it.
Yes, I think the lanyard ring is more useful than the clip.
The pocket clip and lanyard ring are both included in the price, you can easily change them if you like.
Took me a while to find it but here it is: https://budgetlightforum.com/t/-/47204/952
She calls it a "mystery prototype", only 3 days ago, befire it went public.
Hank, would FW3A deep carry clip fit on K light?
Can be issue, because without clip you have a gap and you canāt make a few more turns of tailcap because of light construction. Vide FW3A.
Mike
Ring is included, no worries.
Pocket carry guys are affected, not you
Nice color and shape
Wonder if this means thereās a V2 in the works? I donāt have a D18 yet, have been wanting one but canāt do it now due to all the other recent light purchases 
Sonia this like a D4s with a tail switch?
KR4 product page is back up and available for purchase. Says āCNC machined from Brassā. Copy and paste error?
Was hoping for choice of LH351D. Looks like Iāll wait for E21A.
Blow up the top picture. To me it looks like the ring/clip is friction retained by an o-ring in a o-ring grooveā¦ the tail cap contact should be a non issue with or with out ring/clip, the threads on both cap and battery tube are anodized and contact can only be made off the back of the battery tube directly to the switch pcb retaining ring.
Yes, you can use either pocket clip, or lanyard ring, or neither of them, there will be no contact issue.
Sorry, paste error, KR4 is made of aluminum, thanks for pointing out that.
What can we know about the driver? Is it the same design as the K1? 5A constant current, but is it PWM-less up to 5 amps? Is it not using 7135's at all? Maybe that's why it's able to stay much cooler than a D4?
Does the new D4V2 Ti have the same driver design?