The app that provides access to full-length TV shows for Showtime subscribers was initially only available to AT&T U-verse and Verizon FiOS customers. Showtime Networks later added support for DIRECTV and Optimum subscribers, but today updated its universal iPhone/iPad app to provide support for Comcast XFINITY.

Also included in version 1.4 of the app is support for iPhone 5, optimized video playback for iOS 6 and a few welcomed performance enhancements:

What’s New in Version 1.4

– Available to Showtime subscribers with AT&T U-verse, Comcast XFINITY, DIRECTV, Optimum and Verizon FiOS!
– Support for iPhone 5
– Optimized video playback for iOS 6
– Improved tap targets for controls in video player
– Improved performance and stability
– Minor bug fixes