Yes, it's huge! I broke out my tests/pics, etc. of the SFH55 into it's own thread, little more info now: https://budgetlightforum.com/t/-/68566
Dunno where to even buy this LED. Neal send me one with absolutely no info, not even the part #. We speculated it's identity from a chart in Chinese Nightwatch was using, and doubt the info in the chart is accurate anyway,
I doubt other tints are available. I'd guess it's in the 6000K range, close to a SBT90.2. Dave's been trying to keep info updated on these new Chinese LED's here: https://budgetlightforum.com/t/-/67698, but it's difficult. Even BanL at Kaidomain doesn't know how to ID these things.
This one is one of the new Chinese LED's: http://kaidomain.com/Flashlight-DIY-and-Tools/LED-Emitters-or-LED-Star-on-PCB/other-leds/Custom-P35-HI-3V-8000mA-1800-Lumens-LED
and he calls it a custom P35 HI... We think it's an SFS80 I believe. That one is available in 4000K - I ordered qty 5 yesterday in 4000K.