After T-Mobile and Verizon, the AT&T variants of the Samsung Galaxy S8 and S8+ are also being updated. Weighing in at around 300MB, the update is arriving as version G950USQU1AQD9 for the former and G955USQU1AQD9 for the latter. Sadly, there's currently no information on exactly what the update brings along. The official change-log for the T-Mobile update was also not available, although Verizon had detailed the changes included in its update. Via
Source: http://www.gsmarena.com/update_hitting_samsung_galaxy_s8_s8_on_at_t_as_well-news-24685.php
