BBM for all has been out for months. The all part is kind inaccurate though because it is still missing for Windows phone. BlackBerry isn’t outright refusing to make it available for Windows though.
They’ve always said that if there was a large enough amount of people on the platform, they would develop for it. Obviously Android and iOS have the biggest, with Windows coming in at third place.
So, what is the hold up? David Proulx, senior director of BBM business development,had an interview with TrustedReviews, says the lack of support “is entirely market-driven.” So he thinks that there isn’t enough of a reason to develop.
Maybe eventually they will, Windows seems to be getting more users now.
Source:N4BB