There are several threads at the Google Web Search Forums where searchers are complaining that the voice command on Google for "What's On TV" is now working.
This is indeed true, Google's Community Manager, AJ, confirmed it in several threads and wrote:
Thanks for your feedback about our TV features. We are in the process of upgrading our experience and have temporarily disabled the Google Now TV episode reminder and the "What's on TV" voice action. We appreciate your feedback. To stay up-to-date with our features, please ensure that your Google app is updated to the most recent version (5.13+).
So Google disabled it but it seems like it will be coming back with some new features.
Forum discussion at Google Web Search Forums.
