Thought I'd post this after comments from a couple of Red users.... I think I may be the first person to shoot an Olympic opening ceremony on Epic!
I'm here in London shooting for Canada's Olympic Broadcast Media Consortium, and we've built on what we did in Vancouver two years ago with Red One. I'm using a B4 adapter and a Fujinon 25x16.5mm lens to shoot 2K 16:9 footage for broadcast, mostly at 200fps (except in venues where the flicker made this untenable - I could never shoot swimming/diving at more than 100fps...)
I was very happy when the release version of Epic firmware incorporating the 2K 16:9 option came out just before I left for London - I hate going on a trip like this with Beta firmware on the camera :)
We do fast turn-around by using the Red Rocket's HD-SDI output directly to EVS and/or a Harris server, while backing up to XDCAM-HD discs (which is the standard ENG format for the network at the Games, so the footage can be accessed by anyone). It's definitely not a "normal" workflow, but we still get to do some basic colour-correction and that is a lifesaver when shooting under time pressure in venues with lighting that is completely out of my control!
We're part of the Special Features Unit so this footage is used for features, and also goes into the general pool for broadcast, particularly when we're shooting events like the Mens 100m final!