http://www.cnqualitygoods.com/goods.php?id=1465
Its available! What can this thing do? What are its optimal drive levels? I feel very uneducated on this LED and what kind of modding potential it entails.
Datasheets are wonderful things..
http://www.cree.com/products/pdf/XLampXB-D.pdf
Max Drive: 1A
Output at 350mA (Q2 Warm White, 7D): 87.4 Lumens
Output at 750mA (Q2 Warm White, 7D): 153 Lumens
Output at 1A (Q2 Warm White, 7D): 193 Lumens
Warm White, 7D is going to be about 3000K
Other specifications of interest are all in the datasheet.
PPtk
Oh, and for the record, 5 bucks is crazy for that emitter on a star. The emitter itself is only 82 cents in reasonable quantity.
http://www.mouser.com/search/ProductDetail.aspx?qs=kuz%252bBOU0nbabxQCwxwG46g%3d%3d
Cutter has the XBD Cool White R4 (Significantly higher flux bin than the CNQ One in OP) for $3.07 on a 20mm Star. Much more reasonable..
The Cool White R4 is rated 130 Lumens, 227 Lumens, and 287 Lumens at 350mA, 750mA and 1A respectively. Huge difference from a Q2.
http://www.cutter.com.au/products.php?cat=XBD+on+20mm+Star
PPtk
Bare emitters sound cheap in large scale.
But: wasn´t this supposed to be the new cheap and high lumen/watt emitter? (not MOST lumens per emitter.)
Exactly - Inexpensive Lumens per dollar and Lumens per watt. Even the highest bin only puts out about a quarter the lumens of an XM-L. But, for area lighting, you can put four of these down, get slightly more than XM-L output for ( .82 * 4) $3.28
They are definitely cost efficient.
They also are slightly more friendly to power supplies (Offline switchers, especially) because you can run them in series and then you only need to provide 13V at 1A rather than 3.2V at 3A. For small offline switchers (most of them anyway), making volts is easier than making amps.
PPtk
I bet they will run well over specs just like other crees
cng is way over priced. I ordered xpe-r3 from him for like $3, i think?
I'll have to check out cutter later today. I'd prefer these on 10mm star...
ok - this is kind of attractive - at least to play around with...
http://www.cutter.com.au/proddetail.php?prod=cut1295
so, let's say you got the middle binned warm ones - 93.5lm/350ma
does that mean, roughly, 270 lumen at 1A - so ~1000 for all four emitters at 4A
that's a heck of a lot of warm lumens - and if they can be over driven a bit, sst-50 drivers would work well
still more interested in 10mm pcb at $2.50 each - i'll take 10 or so, thanks :)
edit: ok, a look at the data - 700+ is more like it - still...not bad, but not cheap enough imo
And are these going to offer a throwier or floodier beam profile?
well the 4 dies on one pcb must be pretty floody - but your guess is as good as mine on that tiny little single die!
Your link is to "The Cutter-XBD20IADCW-R5 is a 20mm Round MCPCB with 4 X Cree XBD Cool White Leds."
----Cool White
[quote=dthrckt]
does that mean, roughly, 270 lumen at 1A - so ~1000 for all four emitters at 4A
[/quote]
Once again, the datasheet is your friend. Assuming we're talking about "Middle bin Warm" and not the Cool White's you referenced at Cutter, The Q3 Warm White emitters do 93.9 Lumens at 350mA, 164 Lumens at 700mA, and 207 Lumens at 1A.
So, no, that does not mean, roughly, 270 lumen at 1A.. It means 207 Lumens at 1A or about 828 Lumens for all four emitters at 4A.
Not sure where you came up with 700 (/4 = 175 each) Either. The datasheet is quite clear - Warm white, Q3 = 207 Lumen @ 1A.
**All of my numbers are datasheet MINIMUMS - You could get more light, but there is no guarantee.
after looking at the data, that was my rough guess w/ heat and lens losses 
It sure seems like these are much better suited for indoor lighting applications as opposed to flashlight use. Obviously efficiency is always something to strive for in a flashlight considering run time, but it still seems marginal since we're also sacrificing output compared to the XM-L. I'll leave this one for you mad genius modders!