My understanding is that currently they're concentrating on restoring lost functionality. It's a cool idea to cure blindness for example. As for creating cyborgs it's a bit far away for now. We don't have the technology to simulate a full brain, that's more or less what we would need to fully integrate.
However we might start seeing cybernetic limbs in the next 10 - 20 years. I just hope they stop using Bluetooth for communication... It would suck to get your robotic hand hacked during evening leisure activities XD