Ottawa - Permit my 'preamble' that I became a tourist, and joyfully remained so over and over, predominately BECAUSE of the existence of 'near to current' NEWLY purchased generally beyond well documented ACA Maps.
I will add to my above, that you are wise to be alert to last hardcopy update of any given ACA Map Section, while at the same time knowing that there are Interim Update Downloads (my terminology - I forget what ACA calls 'em) that are truly effective in keeping each as current as the validity and frequency of data sent back by us tourists to ACA and, then reasonably verified and uploaded by ACA for our access.
However (back to your wisdom and caution) ..... I did experience one time on 300 mile section of a fairly popular ACA section back some time ago that was dangerously out of date.
I say and mean dangerously because it caused me to incorrectly plan and nearly have a whole lotta problems on 2 occasions because of it.
I fortunately had access to a secondary map data base and it was my salvation in both case.
My lesson learned: As much as I love ACA Maps and their updating process, ACA is human ....
1. ALWAY PRIMARILY purchase the newest maps from ACA + do the Update downloads before departure.
2. ALWAYS have a SECONDARY map data plan (while without relying on cell phone coverage - internet feeds, not thru cell phone transmission, is what I found best - I am not suggesting a whole secondary set of hard copy maps, necessarily - although, such could well be helpful, subject to how far out on the backside of nowhere we might be finding ourselves : ).