The record button is gone due to a legal ruling in a case with Tivo. Sounds like this affects Comcast only. So others like CenturyLink, DirectTV, and so on are not affected by this ruling, and presumably still have the option to record.
If this feature is important to you (as it is to me), then seems the next step is to confirm availablility with another provider, and switch over from Comcast.
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