Yeah yellow diodes would be great, I just don't yet know if I wanna spend $530 on a 589 Spartan. I'll bet it's a true beauty to all that have one though.
do it you won't regret it. When I got mine for my 21st birthday a year ago I nearly crapped myself when I turned it on. It's the most natural and beatiful WL after 612 which is sunkist orange and reminds me of sunset.
I'd love to see lower dioides in 600s like 625 that would give use a neat color.
maybe we we get 540ish doides near the 543 hene.
470-490 will probably happen as remeber those 980 pointers that emit a cyan line. I have one too it's real.
I'm thinking higher powered 638s with better divergence will happen at some point like as good as a 445.
Imgine if 488s can come out and we get them to 500nm by pushing.
It wouldn't suprise me if we get 405s that eirther break 1 watt or can be pushed up to like 415nm making them much brighter.
Also don't forget 375nm might be a few years away i'd love that.