Come on, this really isn't difficult. We already know what they're going to do because it's what they always used to do before Pascal launched.
My bet on how that will shake out: a heavily down-clocked and undervolted 3070 will become the mobile "3080", giving performance closer to the desktop 3060 but utilizing a nice expensive die to justify the extortionate pricing. The 3060 itself will become the mobile "3070" in down-clocked form. Etc. "Max-Q" editions with hilariously bad price/performance ratios will be released to separate people whose wealth is inversely proportional to their intellect from their ill-gotten gains.
Who knows, they might even surprise us all and completely neuter the 3080 to hit a 150W TDP, providing the absolute worst possible performance per dollar. If they do, I hope AMD cut them off at the knees for it - but that would require OEMs to build capable AMD laptops that haven't been artificially hobbled, and for consumers to actually buy them. I'm not holding my breath.