Apple has released a beta version of Watch OS 3.2 to developers (only).
MacRumors and others are reporting two new features in WatchOS 3.2
Read the original article on MacRumors or search the Apple developer site.
"Theater Mode can be accessed by swiping up on the watch face to bring
up the Control Center. It's just below the option for silencing the Apple
Watch and features an icon with two theater masks.
When Theater Mode is turned on, it prevents the Apple Watch from making
noise and it keeps the screen dark even when the wrist is raised. Notifications
still come through, however, and are delivered via haptic feedback. The Apple
Watch's screen can be activated with a tap or through a press on the Digital
SiriKit allows applications to interact with Siri.
The rumor part is for a WatchOS 3.2 public release in March.