Finally  BBM for andriod and iphone has officially been released to Google play And Apple Store
Now this the statement from the horses mouth
 We promised you'd be the first to know when BBM™ for Android™ and iPhone® is available. We’re excited to announce that the rollout has resumed!


Due to incredible demand there is a line-up to start using BBM. But, since you took the time to sign up in advance, we'd like to give you the chance to start using BBM on Android or iPhone right away without having to wait in line.
Here's what to do to get past the line-up:
1.     Visit BBM.COM from your iPhone or Android browser to download BBM.
2.     Once the BBM app has been installed, open it.
3.     When asked to "Enter your email address to check if you can start using BBM", use the email address this message was sent to.
4.     Get started with setting up BBM.
Note to iPhone users: Apps can take up to a few hours to appear in the App Store so if you don’t see it right away, it will be there soon