--- Quote Start ---
I second that. We have a lot of DE2-70 boards with a Cyclone II for lab work and face the same problem.
Jesse
--- Quote End ---
Both Cyclone II and Quartus II 13.0 are still supported by Altera. If someone's having trouble installing v13.0, try opening a mySupport request with Altera for us to fix it (after checking the normal readme files, etc).
Cyclone II has not had any significant improvements in Quartus II in years, and most (if not all) of the new features in the latest versions would not support or enhance CII in any way. What kinds of "roadmap" are you looking for?