Ever since the first whispers of the BlackBerry 10 platform, everyone has been dying to know how RIM will adapt BBM to the new platform and what it would look like.

N4BB has, yet again, got their hands on some internal documents from insiders which seem to be detailing BBM for BlackBerry 10. The changes seen in the images above highlight a new UI as well as darker themes to save battery life. RIM seem to believe that darker themes could save up to 25% of overall battery life, and that the optimisation of their new OLED-displays may save up to 75% of battery life.

The new UI for BBM looks fantastic and seem to fit in perfectly with the rest of the BB10 UI that has been leaked thus far. RIM will need to use this to their advantage as BBM is one of their strongest advantages over competitors.

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