Release Notes: Unit changes are now logged to the journal. udev will now automatically inform the btrfs kernel logic about btrfs RAID components showing up. logind's inhibition logic has been updated to handle the lid switch and the power and sleep keys all the time.
Release Notes: Support for kdbus has been added. Two new tools, systemd-networkd and systemd-socket-proxyd, have been added. Several libraries have been combined into a single libsystemd to reduce code duplication.
Release Notes: The getty generator now starts gettys on all secondary consoles as well. Automatic PID file removal and automatic discovery of home and swap GPT partitions has been added.
Release Notes: This release introduced a number of major new concepts such as transient units, and scope and slice units. The systemd binary now does all cgroup management.
Release Notes: The boot-time readahead implementation for rotating media will now read the read-ahead data in multiple passes which consist of all read requests made in equidistant time intervals.
Release Notes: Configuration of unit files may now be extended via drop-in files. systemctl gained a "list-dependencies" command. Resource limits can be controlled at runtime. The vconsole setup will apply font settings to all VTs.