I would expect Fenix will keep producing there winner TK 35 with different LED's as new ones come out in the future.
As far as the green tint, mine has it too. Bad.
I have found sometimes the shape of the reflector has an effect on tint. I upgraded my Olight Warrior to the XML U2 emitter recently. Nice white beam with slight yellow tint. When I traded the OP reflector it came with to the old smooth one, it ended up with a greenish tint. I switched back to the OP reflector, green tint gone. My TK 35 has a smooth reflector. Maybe a different Orange Peel reflector would clean up the green tint ?
Here are a few lines selfbuilt wrote about the green tint in his TK 35 review.
The other cost issue is tint. There are never any guarantees here – but some makers do pay extra to insure specific "premium" cool white tint bins are used. In my experience, Fenix doesn't typically do this (although to be fair, they are also a much higher volume manufacturer, and therefore have to go with what's available). I bring this up only because my TK35 sample has the most greenish tint that I've ever seen in all my flashlight testing. What this suggests to me is that you can therefore expect a very wide range of possible tints on the TK35 – caveat emptor.