ActiveSync 4.5 Released

You can download ActiveSync 4.5 here. The readme.doc includes an overview of new features, a select few are below.

• Feature: A device can stay connected to cellular and wireless networks while also connected to PC.
• Benefit: Enables the device to receive incoming VoIP calls and MMS messages when it is connected to a PC.
• Feature: An integrated troubleshooter utility is included.
• Benefit: The utility scans your PC and device to identify problems that can affect the use of your device with the PC.
• Feature: Overall stability has been improved.
• Benefit: Enhances the reliability of connecting devices and syncing.
• Feature: USB support has been improved.
• Benefit: ActiveSync 4.5 provides the fastest USB transport between your PC and your mobile device to date.
  

There's also a plethora of exchange related features, but I don't use those so I'm not sure how useful they are.