That's referring to the aggregated listing view that the device provides across many providers. There are still individual apps. The Netflix app (which is what the dedicated button on the remote launches by default) still works. I'm a Netflix subscriber and have been using the new Chromecast since it was released.

Those articles are about the content aggregation feature of the "Google TV" app.

The Netflix app has been working the entire time on the "Chromecast with Google TV" device, which is what cprecioso recommended.