Check out the change log below, and if you use WhatsApp, don't forget to change your status to let people know multiplatform BBM is coming.
- New UI for sending photos: can send multiple photos at the same time
- Message previews: shows incoming messages from other conversations
- Support for sharing contacts from the Contacts app
- Support for sharing multi-selected photos from the Pictures app
- Many bug fixes
Check out WhatsApp Messenger for BlackBerry 10 in BlackBerry World