Those following discussion on OpenBSD's
misc@ mailing list or Peter Hansteen's blog will already know that the publication of the third edition of
The Book of PF is soon upon us, but for others not
(religiously) reading those venues, you may be interested in the following information now posted on the
No Starch Press Website:
http://www.nostarch.com/pf3
As of now, the anticipated release date will be in September 2014 --
before the scheduled release of OpenBSD 5.6.
Enjoy!
