If Carl Pei Twitter is anything to go by, could be very soon..
Rumours of 4gb ram/32gb storage and 6gb ram/64gb storage versions, Snapdragon 820 quad-core chipset, 5.5-inch Super AMOLED 1080p display, 16mp camera, Android 6.0.1 based Hydrogen OS 2.0, and 3500mAh battery (possibly with fast and/or wireless charge).
Rumours of 4gb ram/32gb storage and 6gb ram/64gb storage versions, Snapdragon 820 quad-core chipset, 5.5-inch Super AMOLED 1080p display, 16mp camera, Android 6.0.1 based Hydrogen OS 2.0, and 3500mAh battery (possibly with fast and/or wireless charge).