OpenBSD 4.7 has been released!
A look at the release page reveals that this release offers wider platform support, new drivers and improvements over existing ones, filesystem midlayer improvements.
The ZFS Intent Log ("ZIL") is a mechanism that gathers together in memory transactions of writes, and is flushed onto disk when synchronous semantics is necessary. In the event of crash or power failure, the log is examined and the uncommitted transaction would be replayed to maintain the synchronous semantics.
The ntpd(8) daemon is an implementation of the Network Time Protocol (NTP) used to synchronize the time of a computer system to a reference time source.