Fujifilm has issued a service advisory for the recently announced Fuji GFX 100, citing issues with the “Lock” function on the side shutter located on the vertical grip. According to the advisory, some GFX 100 bodies have an issue which prevents the lock mechanism from functioning, to prevent accidental shots being taken when that button is not in use.
Included in the service advisory is a range of serial numbers for potentially affected bodies. I say potentially as Fuji note that some bodies have already had the issue addressed before being sold and are not affected. So they say to contact your local Fuji support/service centre to confirm.