Is there a layout yet or is it just a schematic? From what I understand USB 3.0 is so crazy fast it requires quite a bit of RF magic/knowledge to even just route from the connector to a chip on a board.
edit: There are two other open source Type C projects (and they stick with the Hostess snack theme):
I know optical on-chip networks have been the subject of research for many years, and I've heard rumblings of optical interconnects between chips. I don't know their current status, nor whether they look to be useful in practice. Hence my question.
I'd guess that fiber optics is only a net win over large enough distances that you make up the latency from converting electrics signals to optical and back.
It's a whole different problem to have even a short distance connection go up to GHz speeds.
As for USB 2.0 conversion those pins are directly on the connector [1]. No need for anything beyond routing out those pins to a different connector. USB Type-C is essentially a USB 3.0 connector, but changed to be symmetrical and the SuperSpeed pins are used for other things like DP or other highspeed serial busses.
[1] http://www.vrworld.com/wp-content/uploads/2014/09/USBTypeCPi...
The "High Speed Lanes" (on which normally USB3.0 data is transferred) is re-purposed as a displayport connection.
(in the block diagram ML(0…3)± are the differential display-port "lanes", they are connected to the USB "C" plug SSD(p/n)(1…4) shielded differential pairs)
http://www.chromium.org/chromium-os/hoho/chromium-os-hoho.ta...