They would sell the exact same disk all year with zero updates until the next database update the next fall. Acura/Honda would only update the database and release the most current DVD in the Fall.
There is no way of knowing if the 2021 Navi update DVD was updated during the year or if it just has the same database from its fall/2020 release date? There isn't an 'as of' date on the database or a way to preview the database to double-check new roads in your area that were constructed in 2021.
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