The App Store listing states users can utilise the new Messenger app on watchOS 2 to send and receive voice clips, apart Likes, stickers, and more. The updated app also brings new features for devices running iOS 9, including the ability to find Messenger contacts and conversations from the iPhone's search screen, and access Messenger via the list of multitasking apps on the iPad.
Facebook earlier this week rolled out a Messenger feature to its main app, called Doodle. With it, users can Doodle on photos uploaded from the main Facebook app. In order to Doodle on pictures, users simply choose a picture to upload, then hit the edit button and choose the Doodle tab. It's possible to customise the Doodle by changing the colour and pen size, and you can draw or write on pictures. This can be used to draw attention to different parts of picture, or simply send a message.
First announced at WWDC 2015 in June, watchOS 2 was during the September 9 event promised to rollout from September 16, however, Apple encountered some bugs that led to a delay of nearly a week.
A company spokeswoman had said the bug was taking longer to fix than expected. "We will not release watchOS 2 today but will shortly," the spokeswoman said.