I am not sure what took them so long especially after updating the design guidelines for BlackBerry 10 but it is now official. As we told you before RIM has changed the icons for BlackBerry 10 to 114×114 instead of the previous boxy 150×150. I really like the lack of straight lines now so I have to say it is a move in the right direction. RIM is also recommending devs now use a silhouette and lighting/drop shadow to make their icon pop. Check out the details in the BlackBerry 10 Design Guidelines.