Will Stephenson writes on openSUSE news that "there has been lots of plumbing in the infrastructure, with most prominently the removal of SuSEconfig – the capitalization of its name should give a hint about its age."
This milestone continues the rapid evolution of init system with Sysvinit being completely removed after discussion within the community. The much talked about systemd has gobbled udev and udisks resulting in systemd v195. With this milestone openSUSE has also migrated completely to /usr. The temporary mount for media are now under /run/user/
This milestone of course also brings many newer versions in toolchain and for end users. GNOME is now updated to version 3.6 and this milestone also includes the 1.0 version of GStreamer. The software collection from KDE is incremented to 4.9.2 with Qt 4.8.3 underneath. Firefox and Thunderbird are updated to latest stable 16.0.2 releases and colord-gtk and nginx are new. Removals include the Evolution GroupWise connector, removed due to lack of maintenance. F-Spot likewise falls by the wayside, as does the Sabayon configuration management tool. The Smolt hardware tool was dropped as it was deemed to have served its purpose.
If you are an openSUSE user this is time for you to make your contribution to the project by testing it and help the team in finding and fixing biugs. You can download openSUSE 12.3 Milestone 1 from this link.