Sony are facing difficult choices on their next consumer action cam. Xiaomi's Yi set the standard that GoPro has just belatedly followed. If Sony want to stay relevant they need at least 4K/60p or 240fps or above at 1080p on their new cam because there is no money to be made nor anyone to get excited anymore at 4K/30p. Hordes of Chinese knockoffs are now selling that at far lower than $100. Sony have their obviously higher end RX0 to avoid too so you could expect some sort of "market segmentation" features built into the new camera. If there ever is one.