I am planning to open pre-orders in the next week or two. Trying to nail down the final color for the 1.6mm version - either gloss green (likely lighter than the proto pictured below), matte black (like round 1) or black FR4 + clear solder mask (see below):
https://www.strawpoll.me/18822462Example of the black core + clear solder mask:
New features for h87a 1.7:
Redesigned/more robust snap-off parts (USB port, stab anchors around the spacebar area)
JST-SH 4-pin footprints
One for the USB port (daugtherboards can be directly connected now, no cable soldering)
One for an RGB daughterboard (in the area between the navkeys and arrows, or anywhere you'd like really)
A bypass to allow the RGB out from the MCU to be directly connected to the RGB daughterboard, instead of to the underglow (the first RGB LED would have to be removed in this instance)
Removal of the dedicated Reset pads, they are now incorporated into the 6-pin SPI header as the two pins exist there already
Improved ground plane via stitching to avoid needing to jump ground pads when the USB port is removed on previous versions
I plan to order the 1.2mm-thickness thinbois soon after these - likely 2-3 weeks after.