Ed's always the fastest out of the gate on this sort of news, so I'll do no more than hand you straight over to his blog entry announcing the spanking new Mail for Exchange 2.0. It's free and... well, the name gives away what it does...

"New are:

• Support for accept/decline of received meeting requests.
• Global Address List (GAL) lookup
• Task synchronization -server tasks are listed in the calendar.
• In device search - the search application on ESeries devices will search for content in Mail forExchange emails synchronized to the device.
• Additional support for Nokia Nseries devices -MFE is compatible with Nokia N73, N76 and N95
• The application is now installed in a separate folder called - MfE
  
• and more…

Upgrading from any previous version to Mail for Exchange 2.0 requires uninstalling the old version of Mail For Exchange and then install the new version of Mail For Exchange.

This is required to be able to use the new Task synchronization feature."