The recent release of openSUSE Leap 15.3 has gained some maintenance improvements from a new repository setup.
Maintenance efforts for Leap related to Closing the Leap Gap expands to having three separate repository groups instead of one.
The openSUSE specific package repositories called oss and non-oss repositories changed. While these two repositories contained all the content of Leap 15.2 and older, they now contain only the branding and related setup packages.
The shared PackageHub and openSUSE packages known as the backports repository contains all the packages not in SUSE Linux Enterprise nor in the openSUSE specific packages. Previously, PackageHub was specific to SLE, which duplicated packages between openSUSE and PackageHub; now this single project is shared between both PackageHub and openSUSE Leap 15.3. This single repository will improve the quality of delivering updates and avoid package conflicts like zypper patch for openSUSE Leap 15.3.
