Maybe the wmpower user guy mis-interpreted the information? Reading the
feature list for Exchange Server 2010 Beta, I see no mention of SMS synching. What I see regarding SMS is this:
New Outlook Web Access Features
- The ability to send and receive text (SMS) messages from Outlook Web Access
New Unified Messaging Features
- Missed call and voice mail notifications using text messaging (SMS)
Web Management Interface
- Text messaging (SMS) integration
So you can send and receive text messages from OWA, and it will send you an SMS to notify you of missed calls or voice mail messages. But I don't see anything about it synching SMS messages with your phone.