See this thread for the history.

The latest version of the keyboard and motherboard PCB's have arrived and test out perfectly electrically. Still a couple of minor physical changes to make. The connector for the screen needs to be moved 8mm up to allow the screen to be raised level with the keyboard and the ESP-01 socket on the back needs to be moved to clear the Pico-DIL module.
The speakers are 35mmx25mm cavity modules and will be mounted facing out of the sides of the case.
Next job is to design the case and print it. Lots of iterations I expect.
The board can run either the PicoMiteRP2350 or PicoMiteUSBRP2350 firmware. If the USB version is used then the usual range of USB devices can be connected to the PicoDILRP2350 module.
The size of the PicoPalm is 160x108x40mm

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Looking great. :-)

This can be used without the keyboard, right? Use the I/O for something else?

Bit confused by the schematic in the other thread. LCD doesn't appear to be 16bit?

Will touchscreen work with this?

Giving me more ideas, dammit  

Looking good! The Pico modules are already on their way to me from JLCPCB so I'll be ready when this project is.

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This can be used without the keyboard, right? Use the I/O for something else?

Yes but why? It is designed for a specific purpose

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LCD doesn't appear to be 16bit?

It isn't but with the new buffered driver and H/W scrolling it is fast enough for any intended purpose

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Will touchscreen work with this?

No, the screen chosen doesn't support touchscreen. Touchscreen reduces screen brightness and sharpness.

  matherp said  

Yes but why? It is designed for a specific purpose

The battery backup and display caught my attention.

It's great that we can pull from your designs and follow the BOM to have something fully built by JLCPCB.