Facebook has upgraded its Messenger for iOS to version 4.0, bringing several important features, most notably the ability to create groups and message forwarding.
The groups feature is simple: you can create groups, add people to them, name them and set group photos.
Message forwarding lets you send a message or a photo to someone who isn't in the conversation -- just tap to forward it.
Other improvements include the regular stability and speed upgrades.
You can get the new version of Facebook Messenger for iOS here.