No i took the data by myself, next following 5 posts were made by a typo i made, but fixed it. Original post is correct. You can check yourself. Except if official datasheets are wrong.
Cree quietly sold company. “In March 2021, the company sold its LED Business to SMART Global Holdings for up to $300 million.” -Wiki
In short, CREE is not CREE anymore 
BTW i cant find any XM chips in product tree apart of XHP series.
Looks like XP-L and even XP-L HI have been updated too. “Low thermal resistance: 0.5 °C/W”
Here is an older datasheet from Mouser: (CLD-DS97 REV 5)
https://www.mouser.com/datasheet/2/90/ds_XPL-559395.pdf
“Low thermal resistance: 2.2 °C/W”
A major difference is that the updated datasheet shows a lower forward voltage. ~3.05V at 3A vs ~3.18V at 3A. Hopefully the bond wires are robust enough not to have problems with direct drive. The old rev could handle 4.2V straight.
Optical differences have been mentioned.
Well that doesn’t sound good….
I have received my new xm-l2 u4 ver.2 emitters. If someone doesn’t know, he would tell that this is a chinese led.
As for performance, i will try to measure it against other leds like old xm-l2 u4 and sst40 n5.
I did my first mod, on my old Olight M31. The driver does supply 4,35amp to the led, i measured 1390 OTF lumens. Sounds good isn’t it
The coolest color temperatures of XPL-Hi always had very good tint uniformity / color over angle and I preferred them for that reason. Hopefully this still applies with the revision. I don’t care as much if the warmer versions are inferior.
Color is a classic 1A….as expected.
I noticed that Mouser had some XM-L2’s with 02 in place of 00 on parts number. Datasheet doesn’t tell what this 02 means. It is Cree’s internal code, but no other explanation. Maybe this new version? They had some 5700K 85cri min on stock with this 02 designation.