Major Changes Between v3.x and v4.x:
Qt Toolkit. Rivendell v4.x uses and is fully compatibile with major
version 5 of Qt (Qt5). See the INSTALL documents for specifics.
Date/Time Customizability. Date/Time presentation formats can now be
customized on the basis of site preferences.
MySQL Compatibility. Rivendell v4.x aims for full compatibility with
MySQL 8.0 and earlier versions in their default installation
configurations.
RDAirPlay. The rdairplay(1) module has been completely overhauled, and
now supports dynamic resizeability as well as a revamped level metering
system.
RDPanel. The rdpanel(1) module now supports dynamic resizing.
RDLogManager. It is now possible to disable grid processing on a
service-by-service basis, thus permitting a complete schedule to
be generated by an external music scheduler. See the 'Bypassing Grid
Processing' section in the 'Generating Logs and Reports with
RDLogManager' section of the Operation Guide for details.
Many bug and regression fixes. See the 'ChangeLog' for details.
Database Update:
This version of Rivendell uses database schema version 367, and will
automatically upgrade any earlier versions. To see the current schema
version prior to upgrade, see RDAdmin->SystemInfo.
Be sure to run 'rddbmgr --modify' (as root) immediately after upgrading
to allow any necessary changes to the database schema to be applied.