Exchange Server 2010 beta was released to the public this week.  The beta for EWS managed client API has also been released.

Check it out the related blog posts:

Presenting Exchange Server 2010

Introducing the EWS Managed API

This is especially exciting for me because I am currently working as the beta support engineer for developer support.  What that means is that I am support customers who are working with Exchange Server 2010.  I hope to post some content here about what's available to developers in Exchange Server 2010.