I actually found that I had to update to a more recent version of Swaret (it kept saying there were no new packages, but there were no other errors). I downloaded and installed the most recent Swaret - got a changelog, and Low and Behold - I could upgrade to Slackware-Current (with Gnome 2.6 support).
Tips for those whom are interested:
Swaret is available from
http://www.swaret.org/
Make sure the Slackware version you have set in your /etc/swaret.conf file is "current".
root@slack:~# swaret --update
swaret 1.6.2-1
[ ftp://ftp.nluug.nl/pub/os/Linux/distr/slackware/slackware-current ]
### Fetching CHECKSUMS List File... DONE!
FILELIST List File is up-to-date!
Packages Descriptions up-to-date!
Extra Packages Descriptions up-to-date!
ChangeLog up-to-date!
root@slack:~# swaret --upgrade -a
--> This upgrades all packages that
you already have installed. There are new (additional) packages that are also required...
root@slack:~# swaret --changelog
-->This one is really usefull. Scan though the ChangeLog (go way, way back)
--> to find all of the lines that say "Added" where the package described
--> (before the colon) is the same as the package described after the
--> "Added". Here's one such example...
ap/rzip-2.0-i486-1.tgz: Added rzip-2.0 (suggested by Daniel de Kok).
To update GNOME specifically, look at the items in the gnome/ package set (the example above is from the ap package set). Ignore the testing/ package set, unless you are very brave. I recommend adding all "current" packages, as there may be dependancies introduced later for packages added now.