For those who want ActiveSync 4.x news, AS 4.1 is out to the public
(I do not believe it is a beta
) and yes, you are probably biting your nails to see if your device is supported. Well, these are *Microsoft's* requirements...
Quote
The following mobile device operating systems are supported by ActiveSync 4.1:
• Microsoft® Windows Mobile® 5.0
• Messaging and Security Feature Pack for Microsoft® Windows Mobile® 5.0
• Microsoft® Windows Mobile® 2003 Second Edition
• Microsoft® Windows Mobile® 2003
• Microsoft® Pocket PC 2002, Microsoft® Windows® CE OS version 3.0
• Microsoft® Smartphone 2002, Microsoft® Windows® CE OS version 3.0
However, check to see if your device is *unofficially* supported in AS 4.1...