So according to Fuji Rumours
Fuji digital camera news
www.fujirumors.com
- X-T4 rear screen 1.62m dots [X-T3 has 1.04m dots]
- IBIS
- NP-W325 battery rated at 2200mAh 16Wh
- Classic Negative and Bleach Bypass film simulation added.
- CH mode has 15 fps, and the slots are faster at writing to cards. [X-T3 has 11 fps]
- Not a touch shutter like X-H1. [the leaf spring shutter release button]
So 15 fps mechanical shutter is pretty nice, I think only the Canon 1DxM3 outclasses it. Plus IBIS. Better battery. Better LCD. Those are pretty all pretty good updates. $1700. As XT3 owner, I don't feel like I need to upgrade right away, but for newcomers, if you wait on deals and can get this for $1500 - $1600, that's pretty good.