another tech tidbit translate-able video. but i guess most info is old by now.
some other things i gathered:
1. engine is 5kg lighter (some attributed to the plastic manifold), which maybe means the comparison is vs the 2012 pre-facelift FA20.
2. oil cooler weighs a nice 2kg (big lump of copper probably).
3. something about (some one correct me if i wrong, i not too confident about this) a taller 2nd gear for the AT, so you change before the corner.
4. opened by the shifter "gate" to make it possible to go more diagonal from 3 to 2 (probably the first thing i gonna do when i get to sit in the MT car hahaha) than previous gen.
5. rear driveshaft uprated compared to previous gen.
6. new alu roof 2kg lighter than old steel roof, and they seem to say (i not too confident about this) this contributes 1.2mm of the 4mm that the car's CG is lowed by, compared to previous gen.