It appears that GoPro Hero 5 is closer to seeing the light of day than you think. Rumors have been making their way that the GoPro is testing the new Hero 5. From the patent filings and the other sources it appears that the Hero 5 will have a built-in GPS module and a touchscreen. GoPro seems to be going back to the idea of a touchscreen enabled Hero, after they introduced it with the Silver and then removed it with the Black.
The overall bulk and weight of the camera, it seems, is also going to come down. Videos leaked online seems to indicate at a few interesting features, such as GoPro Sniper. At this point we can only speculate or wait till more details come out or GoPro makes an official announcement.