The Sonos Amp will support Trueplay in some specific configurations and with specific speakers.
It's buried in a few pages in
this thread.
Reposting the specifics here,
Trueplay can currently be used with Amp in two setups:
1. When it is operating as the surrounds for a Beam, Playbar, or Playbase.
2. When the Amp is configured on its own with the Sonance speakers we're working with them to produce. Mark good posts by pressing the like button, and select the best answer on questions you've asked to help others find solutions.