The latest update for Cortana now allows for hands free texting and calling like Windows 10 mobile, but... there is always a but, you have to have it running to then use "Hey Cortana". Once you engage, it is hands free to send or call...
While this is true, she still cannot read incoming texts like she does on W10M. This is the feature I miss the most. Cortana made the driving experience much easier and safer. Current Android 3rd party apps do not come close. The ability to read and respond to incoming texts is needed.