Comcast & WarnerMedia Bring the HBO Max App to Xfinity X1 and Flex The HBO Max App Begins Rolling Out to Xfinity X1 and Flex Customers Today December 15, 2020 – WarnerMedia and Comcast announced the rollout of the HBO Max app on Xfinity X1 and Xfinity Flex, providing Xfinity customers with access to HBO …