The original Charliewatch boards, also with 0603 LEDs, fit entire inside the circle of the new layout. Despite increasing to 132 LEDs, it should still be routable on the two layers, assuming the fab will put them that close together.
All of the test Charliewatch boards fab'ed and assembled by Aisler work perfectly (other than things that I broke, like not noticing that this MSP430 requires load caps for the crystal). For the next rev I want to squeeze the LEDs closer together to shrink the watch face a bit, which might require violating the ERC.
I've started porting the older Charliewatch animations to the bi-color version. I should rethink some of them now that we can distinguish the different hands.
Now with a 3D printed case and 22mm nato watch strap. Need to get a 35mm sapphire and maybe a wider band.
Somehow I had overlooked this totally unobvious disclaimer buried on page 316 of TI's 676 page data sheet for this chip.