From many people I hear that Google announced that Databinding declared deprecated, but did not find anything like this on the official website. Google also does not give anything intelligible. Is there really some official information on this account?

Answer 1, Authority 100%

It is unlikely. Most likely meaning that earlier in Gradle should be prescribed support for Data Binding as:

Android {
  ....
  databinding {
    Enabled = True.
  }
}

In the new version of the Android Grade & GT plugin; = 4.0, it is really announced Deprecated , now the Orthodox is recognized:

Android {
  ...
  BUILDFEATURES {
    Databinding = True.
  }
}