Cisco announced today on their blog that they will end support for BlackBerry 10 and also for legacy BlackBerry BBOS6 and BBOS7.
In the statement Cisco mentioned that from January 4, 2017, BlackBerry users will not be able to download the app from BlackBerry World. BlackBerry OS users will not have any technical support either. If you are already user of WebEx, you will be able to use the app until April 4, 2017.
After this date BlackBerry users will be able to join to conference call through standard dial in.
WebEx of course will be supported for BlackBerry devices using Android OS.