DPReivew published an interview they had with Fujifilm Manager Toshihisa Iida at Photokina 2018. In this interview, the most important part for the interview is that Fuji Manager says that they will never make a full frame camera.
He also opens to the possiblity of an interchangeable lens Instax camera and maybe even cine lenses for the GFX system. Fujifilm currently in #2nd position in mirrorless APS-c sales after Sony and they have good medium format systems. More details about the interview can be found below.
Now that all of the legacy DSLR makers except Ricoh have full-frame mirrorless systems, will Fujifilm ever enter the full-frame market?
No, never. Because we don’t have that legacy – luckily or unluckily. We don’t see any point in Fujifilm entering that market, particularly since we have good APS-C and medium format systems. If we entered full-frame [our systems] would just start cannibalizing each other. We’re happy to stay with two completely independent systems.
Should we expect to see more smaller, compact lenses for GF mount, like the forthcoming 50mm pancake?
Yes, in the future we’d like to expand our lineup of compact lenses for GF. We need small lenses for the smaller camera, to get the right balance. We’re always thinking about the whole system.
You can read full interview at dpreview.