In Short

BlackBerry announced the BlackBerry Enterprise Service 12 (BES12) at Mobile World Congress in Barcelona. BES12 unifies BES10 and BES5 into one platform, no longer requiring two separate services for different generation BlackBerry devices. BES12 features multi-platform support for not only BlackBerry, but also Android, iOS and Windows Phone devices. BES12 is backwards compatible and future proof, so it's easily scalable and extremely reliable. 

BES12 was made available in November, 2014.