I think it's time for a GH6 rumours thread.
There were a flurry of rumours in early 2015, including talk of 8K video and people were anticipating potential release dates. The New Camera made this handy-dandy diagram:
They also made a couple of predictions about a couple of different possibilities on how it might happen:
There's also lots more stuff in there too - http://thenewcamera.com/tag/panasonic-gh6/
We know that The GH5 got 5K video in a firmware update in late