A few days ago I reported about a new mystery Panasonic video camera that is on display (under a cloth) at the 2017 NAB show. There was no official announcement or unveiling - it seems that the release will be in fall. Here is some additional information courtesy of our friends over at PhotographyBay:
Update - the mystery Panasonic video camera will most likely have a Super 35 (not MFT) sensor and Canon EF mount - the camera displayed at NAB had a Sigma 24-35mm f/2 Art full frame lens attached to it: