The great review site, "What Digital Camera?" in the UK, has the first hands-on review of the new Panasonic GH4 (published before the official rollout, pulled, and now re-posted).
Their bottom line? "For videographers the GH4 is currently peerless..."
Here's why: 4K at a maximum frame rate of 96fps (!) [EDIT: I was wrong about this - the 96fps frame rate is only available at 1080p], a 200mbps non-AVCHD codec, an OEM Interface Unit (pictured below) with 2 XLR inputs, 4 (!) SDI outputs, color bars, an audio tone and TBC. But for the lack of RAW, a shoulder mount and a built-in ND, this camera has everything on my list.
The new Panasonic microP2 UHS-II card makes these insane bitrates possible. It transfers files at up to 2.0Gbps (!) and is available now at Adorama and Amazon.
If the price point for this camera is really $2000, the 4K/30p cameras on the market, the $2K Sony AX100, the $4K Blackmagic Production Camera, the $4.5K Sony AX1 and especially the $12K Canon 1D C all seem suddenly overpriced.
That said, if you need a 4K camera now, and can't wait for the the GH4, please order it from the links above or the display ads below - it won't cost anything extra, and it will help keep these blog posts coming. Thanks so much!