Revision 3 of the board is ordered! It's very similar to rev.2, but with the following changes:

• Dropped from 4 layers to 2, but kept all components on the top side :)
• Removed 5V boost converter that didn't work anyways
• Removed external flash chip, since I discovered the nrf52840 has 28k of internal flash available to the user
• Removed MAX17262 bypass jumper, since I've confirmed the IC works okay
• Repositioned connectors for the backlight and flex pcb to better fit together mechanically, and repositioned some components to accommodate
• Added BMA400 accelerometer
• Moved buttons a little closer to the edge of the board
• Converted battery connector to 2mm pitch holes rather than a JST receptacle

JLCPCB is having some issues with their online ordering system (the gerber analyzer appears to be broken), so I have to wait until they manually approve the board before it goes into production. I also threw together a quick USB-C female to USB-C female board with the VBUS lines broken out so I can do current measurement while still having access to the serial terminal. Hopefully I'll have the boards by next weekend and I can put together the first wearable version of the watch!