dragonflybsd.org has been down for a good chunk of today; it was due to a blown transformer.
The title says it all - visit the download page for 1.8 to get it.  Most every mirror appears to have it right now - not just the ones on the 1.8 page. Note that some sites have an early version of the 1.8.1 release that lacks the installer; that image is 'dfly-1.8.1.iso.gz'.  Instead, be sure to download 'dfly-1.8.1_REL.iso.gz', which should be the newer file of the two.
Sepherosa Ziehau warned bleeding-edge users that recent network interface changes will require a rebuild of both kernel and world when next updating.  This does not apply to 1.8 users.
A few packages are going to be dropped from pkgsrc - mostly older versions of software.  Speak up on the pkgsrc-users@netbsd.org mailing list if you don't want this to happen.
I've removed some of the inconvenient antispam features (comments from new people are always moderated, http:// links get a post filtered, etc) and switched to different antispam software.  Email me if you add a comment and can't get through...
The next pkgsrc freeze, in preparation for the quarterly release, starts 2007/03/24.
DragonFly 1.8.1 will be released this weekend, so if you have something that you need added, speak up!  This release will include the rtld fixes that enable parts of KDE to work again, among other things.
A recurring argument that pops up from time to time is replacing Sendmail in the base system with something else - Postfix , qmail, or a similar product.  Licensing, complexity, or user preference usually lead to a long discussion that doesn't change the matter.  Simon 'corecode' Schubert has come up with an answer: none of the above.  He's writing a simple MTA that will handle delivery on the local machine, which is enough for a system that doesn't handle normal mail.  For people who need more, sendmail and Postfix and others are all in pkgsrc.
Matthew Dillon pointed out a relatively easy vkernel exercise: making them run without being attached to a terminal.  You could spin off multiple virtual systems, all from one command line.