Question: How to upgrade to The latest Salckware release?
First as root, open /etc/slackpkg/mirrors. Uncomment one mirror if you haven’t already. Change the directory it is supposed to look in from slackware-13.0 or slackware-13.x to slackware current
Save it. At the command line type under root acces:
slackpkg upgrade all
If you have some extra packages installed (who doesn’t?) there are instructions on the man slackpkg page. You should use that anyhow. Slackpkg clean will remove extra packages.