I'm still using S&T 11. I already know how to get to the expressway from my home. And I've found that the Interstates don't change much. After I've laid out my general route from beginning to end, I do a quick check with the printed maps in the Motor Carriers Road Atlas to check for tunnel clearances. If semis can make it, so can I. I don't want to make my 'C' a convertible.
What may change is the local roads to my overnights. I've found that the rest areas as I enter a state often have free local maps as well folks behind the counter that know about current construction delays. Also a good time to get directions to the closest "Ripley's Believe it or Not". :)