Does anyone know when/how/if surefire upgraded their E2DL Ultra to 600 lumen?
All stores seem to stock a 500 lumen version while surefire themselves offer a 600 lumen version.

Has it actually been upgraded? new emitter?
If so, any clue if the tint has become better? less green?

Or is it actually the same but does it now more closely resemble actual performance? (understated surefire lumens vs. ansi lumens)