Apple is now rolling out the first build of watchOS 3.2 beta to developers and many are excited about a new feature that Apple Watch users have surely been waiting for. Aside from SiriKit (which aims to fix a disconnect between the iPhone and Watch-versions of Siri), Theater Mode lets you keep the Apple watch powered on anywhere you wouldn't like your notifications to flash on your wrist, likewise, this also disables the lift-to-wake' gesture. Introduced in watchOS 3.1.3, Theater Mode lets users quickly mute the sound on their Apple Watch and avoid waking the screen on wrist raise....
Source: http://www.gsmarena.com/apple_watch_gets_theater_mode_in_watchos_32_beta_-news-23078.php