Not necessarily. Nothing significant has changed in the roads, valleys, hills, lakes or towns. I-390 is the newest thing on there. If it was fairly decent to bike on in 1980, it is probably fairly decent to bike on today.
I’m going to guess that the number of paper copies of this map still extant, in Pittsburgh, is one.
To the original poster @edronline, what this map doesn’t do is tell about trails on recovered railroad beds and so forth, that might have been built in the last 38 years, so to that extent, Z is right, it is outdated. But I will grab a close-up of the Corning to Ithaca corridor for you.