This release 9.4.3 is a bug fix release for version 9.4.2. It includes a number of bug fixes and patches.
Baculum: there have been significant additions and changes to Baculum.
If you want a web gui please check it out.
S3 driver: If you are trying to build the S3 drivers, please remember to use the community supplied (from Bacula Enterprise) version of libs3.so found at:
https://www.bacula.org/downloads/libs3-20181010.tar.gz
As usual the binaries that correspond to this release will follow in a week or two.