The new firmware 4.12 adds a lot of functionality to the USB port. In serial port mode, you can not only capture cipher text from the Enigma touch on your computer, but can also send text to the Enigma, which it will dutifully encrypt -- keyboard noises, lamps and all. And you can send commands to quickly change the Enigma model  and daily key settings, or even configure your own custom Enigma and rotor wiring.

But the new function we like best is the simplest one: You can now set the Enigma touch to behave like a keyboard (instead of a serial device). No dedicated software is needed on the PC then -- just type away on the Enigma touch, and capture the resulting cipher text directly in your email client, messaging app or word processor. The regular PC keyboard continues to work in parallel of course. 

The new firmware is available for download here. The user manual explains how to upload it via USB -- see chapter 6.