Blackberry has released Blackberry Connect 4.0 client for Windows Mobile 5.0 and 6.0 based Pocket PCs and Smartphones.

- Complete, two-way wireless synchronization of email, calendar, address book, task and memo pad information;
- Enhanced attachment handling capabilities, enabling users to view images, footnotes and tracked changes;
- Remote look-up of corporate email address directory;
- Triple DES or AES wireless encryption;
- Internet and corporate intranet access via the BlackBerry Mobile Data System;
- Wireless device provisioning to allow devices to be activated wirelessly;
- Remote control of email settings to allow users to wirelessly configure out-of-office replies, email filters, and auto-signatures directly from their device; and
- Wireless IT policy enforcement and commands.

As per sems.org,

Previously, you couldn’t issue Wireless IT commands or activate wirelessly. There was no MDS functionality and mostly sync was limited to Calendar, Contacts (with some BBC versions) and Emails. Now all PIM info can be synced and you wouldn’t have to change your APN to browse the internet (blackberry.net APN does not allow Internet access). Also now you can password protect the device, remotely lock and disable it as well. You can also enter Owner Info to display on the Today/Home Screen.

Download Links:

BBConnect 4.0 Smartphone
BBConnect 4.0 Pocket PC Phone Edition
ActiveSync_BBConnect_Desktop_Setup_4.0.0.17.zip
BlackBerry Connect 4.0 ppc user guide english.pdf
BBCWM Quick Start Provisioning Guide.pdf

From what I understand, the above mentioned downloads are from Dopod as there is no official press release from Blackberry