12.3.1 is a minor release is now included in 12.4 Dusky Dolphin release. If you are on 12.3.0, upgrade to 12.4 immediately as there is a regression in 12.3.0 (fixed in 12.3.1).
Highlights of 12.3.1 include:
•Object Medium/Material Description field is now Authority Assisted.
•Associated Date, Associated Date notes, Associated Period, and Associated Period Notes have been added to Site.
•Indexes can be turned off and on to improve searching.
•Notes field added to the Signature and Marks table in the Object Library window.
•Location field has been added to Exhibition Venue
•Reporting Display and Sort Fields windows now have a checkbox that will show the system IDs of the fields.