On Friday 5th February Windows Mobile 6.5 completed evaluation by Defence Signals Directorate(DSD) for Common Criteria EAL4+ certification.

http://www.dsd.gov.au/infosec/evaluation_services/epl/mobile_products/windows_mobile_v6.5.html

In the Mobile Products area of the Evaluated Products List you will see status for Windows Mobile OS and MDM, including any status on Crypto testing:

http://www.dsd.gov.au/infosec/evaluation_services/epl/epl.html