There was a patent I think I saw posted up, of Fuji camera using CFexpress cards. That could be exciting. If they use CFexpress to enable raw recording internally (or at least a less compressed h264-based 10-bit 4:2:2 codec) that could be grand.
My biggest gripe with the X-T3 is that, having bought it for the internal 10-bit recording, the h265 is so difficult to work with that I basically only record externally anyway - which is a STRESSFUL process when you're dealing with stupid bloody micro-HDMI connectors.
I've already had three $70 Micro HDMI cables broken on shoots. Give them the slightest tap, and it's game-over.
Use a port lock with an adapter and a regular HDMI cable. Works far better.