If you haven't installed the new one, better to open your AppStore and install the update, as this update bring not only bug fixes but also new features which is good such as the-most-noticable one is the ability to do voice call using data, the rest as listed below:
New features:
1. Free voice call. You can make phone call via data (3G/LTE) or Wifi using BBM now. No video call at this point of time though.
2. Channels. To me, it's just like Facebook wall where you can post anything you wanted and your friends will be able to see them.
3. Better sharing options. Now you can share contact, photos, voice notes from your iPhone or linked dropbox account.
4. Live Location sharing
