Whether or not you already have an Enterprise Mobility Management solution from BlackBerry® in place, installing
BlackBerry Enterprise Service 10 is simple and gives you more management and control of your devices than ever before.
Start your trial here https://www.blackberry.com/eBES/trialOrder.do?id=161
you can start trading up CALs now, Remember this is not for BES Express 5
use advanced to enter in up to 20 diff CAL keys at a time http://blackberry.com/licensetradeup http://press.rim.com/newsroom/press/...-download.html