Some image of what is supposedly BlackBerry Messenger for BB10 have leaked, putting the battery-saving power of a black background to good use.

The images, acquired by N4BB, show a darker theme which supposedly improve battery time.

Among other things, N4BB notes that the new BBM will feature a darker theme and colors that will save battery life on BlackBerry 10 devices by an estimated 25%, while “optimization to take advantage of the OLED screen… could decrease upwards of 75% battery consumption.”

Image Credit: n4bb.com