Good news for those on AT&T with the Lumia 900, Nokia in conjunction with Microsoft are now pushing out a firmware update to fix numerous lingering issues with the premier phone.

The following are the main changes:

Fixes purple display issue - In short, when the screen would dim down to "low" greys would become purple across the whole display, including on graphics and photos

Proximity sensor - minor adjustments to the sensitivity of the proximity sensor should make phone calls more pleasant when the user puts the phone to their face

Others - We're still getting details but there are also a multitude of other smaller fixes that will greatly enhance the user experience

The update went live 10 am PDT and users should be able to plug their devices into their computers (Desktop Zune) and pick up the new firmware. Note, this is NOT an OS upgrade and it does not contain "Tango"--this is simply a maintenance release for firmware. However, Nokia does note: