AT&T plans on changing the signs in its retail stores on July 24th. A picture showing the instructions for the latest OS signs shows that Windows Phone 7 will be represented among the new ads that will be in the stores. While this might point to an earlier launch for Windows Phone 7 than expected, history shows that past items sent for a July display for the carrier did not get launched until September, which would be close to the Q4 launch of the OS that is currently expected
. The quantity of 6 points to two separate Windows Phone 7 models. It's interesting to note that Android leads with a quantity of 14 which might be a tip off of where AT&T is going to spend its promotional dollars this summer.