Last week we saw the leaked image of LG Optimus G Pro in White color for AT&T and it is official today. White colored variant of LG Optimus G Pro is available for $99 on 2 year contract or for $439 without any contract.
Only Indigo Blue colored variant was made available through AT&T at initial launch. Other than the new white color, everything else remains same. Hit the below link which takes to LG Optimus G Pro AT&T page if you are waiting for white colored variant from AT&T.
Source : LG Optimus G Pro Page at AT&T