They're announcing the Mobile lineup of Pascal chips at Gamescom.
ASUS supposedly has a laptop with a 1080M (or whatever it will be called) they'll show that they announced like six months ago even though they didn't have anything close to final hardware.
EDIT: I think NVIDIA flipped the Mobile and the later tier Desktops schedule somewhat to get more 1070 and 1060's out sooner. May have ran into a yield crunch too.