I have updated both the stable PPA and the daily PPA for Bionic.
I would highly appreciate some testing of the daily PPA, since this is a near release ready build of Picard 2.0. The final release should AFAIK come in a few days.
As mentioned earlier Picard 2.0 builds will only be available for newer Ubuntu versions (Artful and Bionic), as the 16.04 LTS release does not provide all dependencies needed.