Sooooo the thing about 4000K/ 4500K 219b is that that is generally reserved only for Illumn. I would recommend sending them an email personally and see what they say. Last I heard, there were plans for a v3/ v4 from them, but then COVID/ supply chain shizz happened and here we are.
The 3000K~~~ were fine because they were outside what Illumn and Gene privately worked out. I cannot speak for anyone but myself, however having conversed privately with both parties myself, I decided to forfeit the venture entirely and will be refraining from that specific LED/ Malkoff setup until they have more clearly told me how that story is looking to end.
That being said, a "High Noon" M91B and perhaps MDC (likely with samsung LH351D) , as well as the Amber M61 are in the near future. Sounds like we need another 4L added to that short list.
The requirements you would need to confirm with Gene personally, typically it includes a minimum of 20/25 orders, you must supply LEDs outside of normal stock if necessary (and extras, generally I do 5-10 extras depending on scale of project)
