Today BBM for iPhone updated to version 2.6.2.39, which give another features as see when a contact has received and viewed your sent pictures and share multiple pictures at the same time.
Its not essential now using a BBM, sadly i only needed it to respond my corporate client which can’t move to another messenger like LINE or WhatsApp.
The bad part is now your timeline is filled with bunch of Ads and recently your ID will be spammed with invitation from sponsor ID which is a bad bad move for BBM.
Anyway, you can check if you can update this app on App Store or hit this direct link