First, the National Geographic Atlas of the World, a new edition of which comes out every four years. This year’s is the 11th.
I have to confess that I’m fond of the National Geographic: compared to other atlases it does its own thing with political maps that eschew coloured relief and explain every little boundary dispute and controversy in little red letters. It’s also enormous, larger in dimension than the Times Comprehensive (though not as heavy) and with a list price of $215/£170 is slightly more expensive. National Geographic’s page doesn’t go into detail as to what changes were made for the 11th edition, which is a pity. (Does it have Eswatini and North Macedonia, for example?)
The Oxford Atlas of the World is a lot smaller and more affordable. At $90, it slots between the Times Universal and Concise atlases in terms of list price, though its page count is that of the more expensive Concise. It’s also updated every year; this year’s edition is the 26th. And the publisher’s page does list some of the updates. (Eswatini and North Macedonia? Yes!)
As for the Times line of atlases, the most recent to be updated was the third-tier Times Universal Atlas ($50/£80), the 4th edition of which came out in August. Prior to that, the 5th edition of the affordable Times Desktop Atlas ($35/£20) was released in February. The 15th edition of the top-of-range Times Comprehensive Atlas ($200/£150) came out in the fall of 2018: I reviewed it here.