According to official Winbond news, they will be releasing peripheral devices compatible with Windows SideShow. Prices range from 80 USD to 150 USD. Interestingly, in this price range, the hardware cost for SideShow is only 10 USD, and the rest of the cost comes from the LCD.
Currently, two models on display are the MK140 eChatter and the MK140 FM; one is equipped with a keyboard while the other is not. The eChatter model with the keyboard can connect directly to a computer via Bluetooth, allowing you to keep chatting with your IM friends even if you're in the bathroom.