If you’re a beta user you may want to head on over to Test Flight and update BBM. It updated to v22.214.171.124 bringing some new features and fixing others.
Swipe to delete chats
Select and delete multiple chats at once
Select up to 10 pictures at once to share in chats
Delivered and read notifications for shared pictures
Added new color to chat bubbles.
Head on over to Test Flight and give us some feedback.