Update:

> Block diagram slightly revised: [...]
> - Renesas/NEC uPD720201 4-port USB3
> - Diodes PI7C9X2G404SL PCIe bridge/switch

From a week ago:

Electrical schematics (alpha version) as of December 2018 have been published.

Block diagram moderately revised:
- 2 RAM slots
- 2nd HD at SATA3
- USB2 hub
- HDMI/DisplayPort (only one at a time)
- Diodes PI7C9X2G608GP PCIe bridge/switch at PCIe 2.0 x4
- Conexant CX20709-21Z USB/I²S audio codec (via CPLD as SPI/I²S bridge)
- MiniPCIe x1 slot removed

Furthermore, a chassis was selected.