@JCalMN We are removing this to make way for new updates and improvements to our online experience for customers - PL — ComcastCares (@comcastcares) August 17, 2015

It's unclear what improvements are on the way, and so far, Comcast has not followed up with an app for Xbox One (or PlayStation, or other set-top boxes for that matter) to replace it. Comcast never added live TV to the app, so it was mostly just a faster way to get video on-demand, something the cable giant may prefer to do with its X1 platform, especially since it's starting to add games too. Whatever the plan is, the lights are turning out in just a couple of weeks.