Panasonic announced today the Lumix G7, a more compact, stripped down version of the GH4 that offers 4K recording internally and costs less than $800.
Here's a quick introductory video:
And a more in-depth look at the G7 from B&H:
And finally, a sample of the G7 video quality that is quite good:
And here are some specs and photos of the new Lumix G7: