Just saw these on the Nichia site, I have to dive into the specs to see what's new about it, but it for now at least it looks a bit different and pretty, I think :-)
The 90 CRI versions are still 'under developement'
http://www.nichia.co.jp/en/product/led_search.html?op=cond=whatsnew='19C'
http://www.nichia.co.jp/specification/products/led/NVSW219C-E.pdf
I'm not the greatest spec-reader but it seems like compared to the 219B:
voltage seems unchanged :stare:
luminous flux is only slightly improved :stare:
angle of emissivity seems unchanged :stare:
luminous intensity is improved :smile:
thermal resistance is much better (4.2 vs 6 for 219B) :bigsmile:
sooo they will be about the same as the 219b but can be driven harder? Am I reading that right?
That is how I read it too, but who knows how performance is in real life...
An increased luminous intensity suggests that it will also be throwier than the 219B
That white substrate might cause some beam rings in some lights
So the 219C high CRI version has a minimum of 90 vs 92 CRI typical and 85 CRI minimum of 219B.
Sounds good to me.
Yes, but what is a mystery to me is how the luminous flux has increased clearly less than the luminous intensity, while the directivity profile (~emission angle) is unchanged :puzzled:
Perhaps I can not read those specs very well, or Nichia still has to work on some numbers 
Maybe they changed how they measure…?
I have talked to Nichia and will be getting some samples soon. 
Depending on what they send, I’ll be sure to forward some to you djozz for testing. I asked for the 5000K 90CRI variant. Possibly 10 pieces, we’ll see. They’ll be coming to me from Japan so it’ll be a week or two.
It looks to be a completely new emitter with a new substrate as well, so it might just have different characteristics.
I couldn’t get the lady to commit to any possibility of overdriven, lol, guaranteed at 1800mA, that’s all she’d say. She was most interested in selling me a reel of 3500 though. 
i haven’t looked at the spec sheet, but I assume they still fit on an XP mcpcb?
Is it just me? Am I that hungry? Or does that remarkable like an over-easy on a small hot plate?
Go home, Dale. You're hungry.
Hi Djozz!
I think the key is this directivity profile, comparing that W219C-E pdf to W219B-V1-E.
It looks comparable at first, but it's (C vs B) 0.90 vs 0.91 @ 30°, or 0.38 vs 0.44 @ 70°.
So the C emits less to the side, thus more upright.
Fantastic, I still haven’t found a place to buy the B-V1 from and now there’s the C, hopefully these will available someday…
Coffee is almost ready, do we have any strawberry jam?
Thanks, you're right, I tried to save the directivity diagrams separately to show it, but the pdf does not let me do that unfortunately. But if you open the pdf's in separate tabs on the same page and height on screen and you toggle between them, you can see a slight difference indeed :-)
Wow, you did not waste time getting these, did you? I wonder if the 90CRI variants are there btw, the website shows them as being 'under development'. Nice to send some to me too 
. I would not mind at all testing a cool white 70CRI version of the 219C as well btw, it may prove a good competition for the XP-G2 (as is the new Oslon Square).
I’ve got some raspberry “all-fruit” spread! I like strawberry, but I love raspberry and blackberry! Are you sure there’s enough coffee? My mug holds half a pot! It’s 10 inches tall and says “Espresso Yourself” on the side. :bigsmile:
I like my egg yolk just a bit more done, I hate the liquid stuff, but +1 on the coffee, with frothy milk and lots of sugar for me.