There's a Ace software update available, from 2.9.2.xxx to 2.9.3.xxx
The update process is incredibly slow, more than 10 minutes after a quick download. I assume since it uses Bluetooth to communicate with the Sonos app.
It would be nice if sonos posted release notes, which I can't find, but in any case there's no hint of TrueCinema in the settings yet.