Thanks for the help
# apt-get -u dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Not able to get apt-get to work. (see above) I used the link provided to come up with the -u option.
Also unable to get Synaptics Package Manager to do the job. The Synaptics Help function provides a procedure to upgrade the release, but "Choose Method" doesn't appear as a clickable menu option.