Well there's no evidence that I've read saying that they are definitely different diodes. The only thing is that these have a central wavelength similar to a known diode that centers at 462nm. I've never seen anyone come out and say "yes, I can confirm these are actually ___."
Everybody thinks they're high WL 445's because these act accordingly with our current 445's being run at higher wavelength instead of higher power.
Plus, I don't think DTR is pulling these from projectors. The first batch popped up as a lot of (7?) on feebay.
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It's entirely possible these are new diodes -- and a large quantity are leaking out before they show up like most other diodes do. I'll believe whatever has the best evidence backing it.