Maybe not interesting from the RPi perspective, but the my recent upgrade of Arch Linux to run Scratch on RPi led me to systemd :-
Quoting from http://freedesktop.org/wiki/Software/systemd :
systemd is a system and service manager for Linux, compatible with SysV and LSB init scripts. systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, supports snapshotting and restoring of the system state, maintains mount and automount points and implements an elaborate transactional dependency-based service control logic. It can work as a drop-in replacement for sysvinit.
Click the extinguisher to learn more (if you really want to…)