That’s something that’s only possible to a limited extent within the latest version of Android, and not possible at all on iOS or Windows Phone, the latter being BlackBerry’s main competition for the moment.
Go BlackBerry! As someone who’s spent almost the last 6 years in the Kitchener-Waterloo area and even worked at the company as a co-op student, this is actually exciting news. I don’t own a BB10 device, but it’s nice to see BlackBerry outdo the competition, even if it’s in one particular area of the software. I just pray they don’t screw up the execution and/or delay the release of this update.