`tf.nn.scale_regularization_loss`.

*   `tf.keras`:

    *   Premade models (including Linear and WideDeep) have been introduced for
        the purpose of replacing Premade estimators.
    *   Model saving changes
    *   `model.save` and `tf.saved_model.save` may now save to the TensorFlow
        SavedModel format. The model can be restored using