According to reports, Google’s voice command, OK Google, would expand its functionality on Android beyond just being a staple element on the Google search app.
The ‘OK Google’ feature is said to become universal across core apps which will allow users to share photos in the Gallery app, or reply to Gmail messages by summoning the ‘OK Google’ commands.
The development of the expansion is still in the early stages. Initially, according to reports, it may only appear on Nexus and Google Play Edition devices.
Via Techradar.com
Source: Androidpolice.com