Broadsword Online Games have released Publish 100 for Ultima Online to all remaining shards:

Beginning with each shard’s normally scheduled maintenance on June 28th, 2018 (ET) Publish 100 will be released world wide.  Be sure to check the notes for full release details.  As always, we look forward to your feedback.  We have also updated TC1, Origin, Baja, and Izumo addressing issues we found related to fixes for Shadowguard.  These updated changes will be released world wide as well on the 28th.

See you in Britannia,

As has been noted previously, Publish 100 is mostly a maintenance release, bringing with it numerous bugfixes and suchlike.