Considering the amount of stuff still broadcast at SD resolution on today's HD monitors, I can't see there will need to be a huge rush on 4K cameras to fuel 4k screens. This stuff is always driven by the retailers, who pressure manufacturers to give them another format with margin in it as the last one is now selling so cheap there's no profit to be made. The limitation on broadcast will not be the cameras but things like vision switchers, same as it was in the early days of HD. Every network bought HDCams and Varicams but there were relatively few full HD switchers around which proved the weakest link in the chain. Perhaps now that BMD have entered the mixer/switcher market they could adapt to 4k faster and cheaper than happened with HD but it's still going to be the limitation for broadcast IMHO. How many cheap 4k vision mixers/switchers, routers etc are we being promised?
On these proposed new cameras, I'm sure there will be a raft of them at NAB and I'm just as sure most of them will deliver crap - if 4k crap instead of 1080 crap. I've seen people rate Scarlet below the C300. Really? 4k, 16bit RAW vs 1080 8 bit, Long GOP?
And yes Gunleik, enough of the fast. What I wanna see is ISO range downwards to 50 or 25 ISO. Gimme my electronic Kodachrome!