We're regretting bringing a zoom lens to a macro fight, but here's what we can make out of the front-side ICs:

That 100 MHz ARM Cortex M4

Dialog's SmartBond DA14681 Bluetooth LE SoC

An MX25U6435F QSPI flash memory chip for firmware images and resources with 8mb of room to play

Pebble's smartstrap data and charging pins,

and their accompanying grounding pin

We also see here a similar-sized battery to last year's Pebble Time, though in much less friendly packaging.