Fujifilm will release a new major firmware update for its GFX50S, X-T2, X-H1, X-Pro2, and X-E3 mirrorless interchangeable lens camera.

Trusted Japanese website posted the details about these upgrades. For Fuji X-T2, firmware ver4.00 allows users to shoot 1080/120P high-speed video  and enables focus distance bracketing up to 999 frames.

See below for the who details.

GFX 50S Firmware Ver.3.10 -due May, 2018

Compatible with the newly developed FUJINON GF250mmF4 R LM OIS WR capabilities

The upgrade will add compatibility for the newly developed FUJINON GF250mmF4 R LM OIS WR capabilities that include “Focus Preset”, “AF-L” and “AF-ON”
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https://www.dailycameranews.com/2018/04/major-firmware-updates-coming-in-may-for-fujifilm-gfx50s-x-t2-x-h1-x-pro2-and-x-e3/