In past there are some rumors about RIM's instant-messaging client, BBM, would be making its way to Android and eventually iOS.
It seem that rumors comes true recently an an app have just surfaced, showing the standard BlackBerry Messenger profile page, but not much else. The app icon doesn't look great right now, but BBM for Android is still in testing.
While I doubt that the taste of BBM on Android will be enough to get owners to make their next phone a BlackBerry, RIM may still make a bit of coin if they charge for the core BBM app on other platforms.
I hope we would see BlackBerry Messenger for Android before 2012 hits.