Since BES 10 now supports non Blackberry devices such as Apple's iOS and Google's Android, the Secure Work Space service has been made available to them and includes protected client applications for email, calendar, contacts, tasks, memos, secure browsing and document editing. Unfortunately due to operating system differences the service won't be as secure on non Blackberry 10 devices (though there are now 3rd party enhancements to Android to do similar things).
If Blackberry can regain their enterprise customers while allowing users to have access to other features they may actually be able to hold on to the market which they've been losing over the last few years.