The version on Ankihub which is tagged as V12 will be the most up to date. V11 is over 2 years old and will have a decent amount of out of date information. V12 can sometimes take a little to update things (e.g. took until early this year to get 2022 CDC developmental milestones fully incorporated), but is actually being maintained. If you don't want to pay a continued sub, it's generally worth the $5 for a single month to at least update the deck.