EOL for FreeBSD releases

[duncan brown]

Hello,
  I've been using Linux for about 11 years now, and I'm starting to get
interested in your distro.

  The thing is, I can't find anywhere on your site the EOL plan for your
releases.  I run my own server on Fedora Core, but the EOL schedule is
too agressive for me to keep this up.

  I've read a bit of the FAQ, but I'm either blind or I'm too impatient =].

  Also, what's the method for upgrading from major version to major version?

  Thanks in advance for your help.

-D