here are the other things that i noticed about the Rev B.
1. Using D-link lite: Trying to move the camera to the right moves it to the left even if the mirror settings in the web console is correct
2. The My Surveillance application of my DNS-320L does not detect the Rev B, well, I can manually enter the details of the camera and test the connectivity but when i try saving it it fails, and if it does save successfully, the image never loads in the application, thus I'm not able to record using my NAS.
With regards to the WiFi, i think, if it has the same antenna settings as the Rev A, the Rev B might be using the internal antenna only, where in Rev A has the option to select the internal or external antenna, though I'n not sure if this is true for Rev B.
Hopefully they will fix this early since it is very frustrating.