I'm almost certain Andrew Reid has mentioned that Panasonic definitely considers the G9 as the update to the G85. If Panasonic would only issue a firmware update to improve the 1080 on the G85, particularly the 60p, I would be a happy camper.
I'm so glad this amazing film was done with native lenses. I'm so bored with people perpetuating the lie that a speed booster is required equipment with m43, as opposed to just another tool in the tool box.
I also own both the GX85 and G85. The noise is certainly more noticeable on the G85, but I've not noticed the noise come through the internal microphones. I don't shoot professionally though, so I'm not very picky about such things.