Name: Xfinity Beta
Now you can experience XFINITY TV on Roku with the XFINITY TV Beta app. Stream live TV from your entire channel lineup.
The beta app will work on recent Roku devices including the Roku Express, Roku Express+, Roku Streaming Stick (model 3600), Roku Premiere, Roku Premiere+, Roku Ultra, Roku 4 (model 4400), Roku 3 (model 4230 and 4200), and Roku 2 (model 4210).
Is there a charge for using the XFINITY TV Beta app on Roku?
Customers will not pay equipment charges with respect to their use of Roku devices. All other fees associated with a customer’s service will apply, except that, during the Beta trial, additional outlet charges for services to outlets connected to Roku devices are being waived. On conclusion of the trial, you will be informed of the charges that will apply for connecting this device with your XFINITY TV service and will have the opportunity to opt in.
(source: OFFICIAL INFINITY FAQ)