After seeing these official videos from Olympus Australia, i've asked Michael Hurren some questions. Here's the answer i've got from him:
"The video was shot in Cinema 4k, so 4096X2060 px, 24fps at 180' Shutter (48th/sec)
There's plenty of latitude in the files, the extra dynamic range, video colour profile and especially the high bit rate means theres lots of information to work with. I like this camera a lot, files and colour look so great straight out of the camera, and I find i don't need to do much work at all as long as I have exposed for the highlights I want to keep and dial in the correct white balance.
Post wise I edited and graded in FCPX on my Mac Pro, and used some plugins to give me curves. everything works without a hitch.
I don't like running variable ND's because of the colour shifts and cross hatching, so I started with 4x4 Formatt Hitech plain ND's, but they were giving me a green cast, so I moved to my set of Hoya multicoated ND's and the results were much better."
I've asked