It just launched an hour ago.
Clone to the 5, just more 4k slow mo rates, new super duper processor, supposedly better image stabilization (still just digital, NON optical) and low light performance.
I'm really surprised GoPro hasn't come out with something better. Now no I haven't used it, nor will I probably ever, as I know digital stabilization isn't great. It may smooth out me walking on the sidewalk, but not me with a line mount riding heavy chop or flying down singletrack at high speed. I'm bummed.
Oh yeah.........it's now $499! ugh.
Hey Revl Arc if you are listening. This is your chance. GP in my eyes just laid an egg. No tangible upgrade from my Hero 4 Silver from 2+ years ago.(relevant features, size, price, fogproofing? ) 2 years is an eternity in the tech world. I hope your cam launches soon and is a hit.