Finally it is out, unfortunately you need to update your BJ from Windows XP or Windows 2000 as the updater executable is not compatible with Vista!
http://www.samsung.com/us/i607/windowsupgrade
I'd be curious to know if the Vista restriction is real or not. UT Starcomm said the same thing about updating WM5 to AKU 3.1, but WMDC in Vista *can* work with it as long as the firewall is off (oddly the WM port being open wasn't working) and the mobile device is disconnected from wireless LAN