The project is still WIP, but there's a repo for the Iyada now. Already mentioned in previous issues, Gareth Gummow aka gargum/Outrageous-Half has been working on this split with a plethora of features for some time now:
Currently working on a split keyboard called the Iyada. The idea is that it's a split keyboard with two Cirque trackpads on each thumb cluster that can serve as a mouse, a 3D mouse for CAD, and as dual analogue sticks in video games – Outrageous-Half.
Specs
50 keys
Choc/MX, hotswap option for both
RP2040
dual Cirque trackpad
roller and rotary encoders
joystick
display
RGB lighting
haptic feedback (DRV2605L)
audio feedback (piezo speaker)
QMK
PCB of a previous iteration
Power boosting: The Iyada is equipped with a TP4056 and a lithium polymer battery on each side. This allows one to provide extra power, thereby ensuring features like RGB and Haptics are always working as expected, no matter the configuration.