Even with two great lights like this where you're close to "having it all", it shows you that you just can't "have it all". Pick the better heat sinking of the SC600 or smaller size of the SC62. But then think about the SC600...it's still small compared to many other 1x18650 lights. It's almost like it should have ended there. "Better heat sinking" in the SC62 basically gives you the SC600. I don't really see how this can change until some radically new material is invented 100 years from now or a new LED that doesn't put out heat. The SC62 is sort of in a gray area, pushing the limit on output, runtime and size. The H1 mode is better suited for short periods of time. I find the H2 modes to be plenty anyway.
The high temp of the SC62 running is actually showing amazing heat sinking, transferring that heat to every square cm of the body. The PID makes runtime more reasonable. For the heat to go elsewhere you're basically limited to cooling it manually with air/water, or again, more heavy clinky metal on the body.
I'm guessing any updates will be cosmetic or even a tweak in the UI.