I did test 2:11.0.0-0ubuntu2~cloud0 and 2:12.0.0-0ubuntu1.1~cloud0 on Xenial. The packages seem to be identical to those in Artful and Bionic.
I did test 2:11.0. 0-0ubuntu2~ cloud0 and 2:12.0. 0-0ubuntu1. 1~cloud0 on Xenial. The packages seem to be identical to those in Artful and Bionic.