Source1 (4gamer.net): http://www.4gamer.net/games/999/G999902/20150605056/
Source2 (PC Watch): http://pc.watch.impress.co.jp/docs/news/event/20150605_705651.html
For those who never heard of Realforce, or topre's switch, maybe check here and here.
Capacitive switches (the one these keyboard uses) doesn't really have an on/off state,
the new prototype adds 256 level pressure sensing to each switch.
In comutex, topre demos how this could be useful.
Alongside of normal keyboard feature, this prototype adds a few modes:
In XInput mode, you can map any key to XBox One/360 controller's analog input, and play games with it.
In MIDI mode, you can play music just like a MIDI keyboard.
Auto switch to upper case when you hit a switch hard.
It could also emulate as a usable mouse (no demo video found).
This prototype is still in development, it will be made into product around next year.
A new RGB backlid model is also announce, targeted for western market.