Best answer by Ryan S
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.