When do new 'Grey's Anatomy' episodes come out? Season 21 premiere date, time, cast, where to watch
The Season 21 premiere of "Grey's Anatomy" will air on ABC. Fans can also stream the episode on Hulu Friday morning. The first 20 seasons of the series are available to stream on both Netflix and Hulu. Netflix typically adds new seasons of "Grey's Anatomy" after a season wraps up and the same is expected for Season 21.