The other sites I see posting similar in the last few hours seem to say "We see these dropping in Europe therefore we expect them stateside soon" which seems to be pure speculation, not based on any new information we haven't already seen.
Keep hope alive, but stay skeptical. If ya gotta have 'em, get 'em when you can is my reasoning. I could afford to pay a little extra not to miss out on this one, I'll have no regrets even if they do launch in the US.
Also consider whether you'll prefer the version from Vietnam, that's what's out there now. Maybe paying the bit extra gets you a better shoe too?
Good luck guys,
-Daver