RIM announced today the impending release of the latest version of its BlackBerry Enterprise Server. BES 5.0 will add a bunch of new features to improve the BlackBerry experience for enterprise users. Here’s a quick list of what’s been announced:

* Retrieve corporate documents behind firewalls

* Add, read, rename and delete folders on the handset and have those changes be applied to the desktop email client

* Create rules within the inbox to filter email and have those changes be applied to the desktop

* View attachments in calendar entries and meeting requests

* Download and store emails and email attachments onto microSD cards

via RIM announces BES 5.0 | BlackBerry Cool.