The app is in private beta mode, which means it's not yet available to the general Windows Phone public. But that will change soon.
In the works are updates for two popular BlackBerry products, Secure Work Space corporate email and the BBM messaging program for Android and iOS.
Fresh off the launch of its Passport smartphone, the struggling handset maker is on the slow road to recovery.
The latest Facebook Messenger update lets you "Like" things even more emphatically, as well as recording 15-second video messages right there in the app.
BlackBerry Messenger's scattered design and basic features keep it behind the competition.
Pricing not available
BlackBerry's president says to expect a more native app experience for BlackBerry Messenger on iOS and Android.
BlackBerry's acquisition of German software firm Secusmart aims to secure voice and data and put better mobile security in every president and chancellor's hand.
Marty Beard will start as chief operating officer immediately and will be responsible for "cross-functional organizations" at the company.
LG will preload some new Android phones and tablets with BlackBerry's BBM messaging app, as part of the Canadian company's push to diversify from its failing handsets.
BlackBerry CEO John Chen leaks news of a new BlackBerry device that is set to launch in September at an event in London.