Although the 11.3 repos are not browsable you can add them to Yast, to replace 11.2 repos and ‘dup’ to 11.3
The url’s are
OSS
http://download.opensuse.org/distribution/11.3/repo/oss/
NON-OSS
http://download.opensuse.org/distribution/11.3/repo/non-oss/
UPDATES
http://download.opensuse.org/update/11.3/
*** You should make sure you actually know what you are doing before attempting this!**
Well said: - I shd have also added packman and Videolan using the repo feature because otherwise the “zypper dup” after 3 hours left me with a blank screen reboot (needed them for the vlc media player). Had to wipe and use CD install - after 6 hours the reboot failed in grub - the hd() mapping was wrong. Luckily I had made a grub floppy before reboot and managed to do the first boot reconfiguration. Then repaired the menu.lst file.
Not a straightforward procedure! But great job for the developers!