In both one-on-one and group video chats, Messenger users can now add or use animated reactions, filters, effects, and new masks, while Facebook has added a conveniently placed camera icon to take a screenshot of your video chat.
For animated reactions, Messenger users can choose one of five emoji icons: love, laughter, surprise, sadness, or anger. Tapping an emoji generates a related reaction that animates on the screen for a short period of time.
On the artificial intelligence side, Facebook has expanded the capabilities of Messenger's built-in "M" personal assistant, adding a "save it for later" function, birthday wishes, and call initiations, according to Engadget.
The personal assistant, which is currently available in the United States only, is designed to provide proactive suggestions in Messenger [Direct Link].