People are speculating that a Federal Communications Commission (FCC) certification for a Sony Wireless Adapter points to DualShock compatibility for PC. The device is listed with a “CUH” code, which indicates it’s a PS4 certification.
The image released points to a USB device. It’s also a Bluetooth device that looks very similar to the transceiver inside the PS4 system that communicates with DualShock 4 controllers. The listing will be kept confidential until 2017, but people are assuming that this is a device to use a DualShock 4 on PC. This theory is backed by Sony officially supporting PC remote play as of recently.
Despite the evidence this is not confirmed, and it could also be a device meant for the upcoming PS4 Neo.