Hello,
thanks for these clear words in the new release info for Keras 2.2.5.
At this time, we recommend that Keras users who use multi-backend Keras with the TensorFlow backend switch to tf.keras in TensorFlow 2.0. tf.keras is better maintained and has better integration with TensorFlow features.
For me (I am only using Keras + TF) this means that I will stop using Keras (multi-backend version) and start using TF 2 Beta version with tf.keras from now on.
Thanks
Philip