On the cover the date of the issue was moved from the bottom of the picture up to the top of the yellow border. That space previously announced war bonds, supplements and TV shows. The date format was changed from May 2018 to 05.2018
On the spine the words National Geographic were removed (after over 100 years there) and replaced with a border rectangle. Here again the date format was changed from May 2018 to 05.2018 This will allow more space on the spine.
While the Society has had numerous changes to the magazine's covers over the years, to the best of my knowledge this is only the fourth spine version they have had.
#1: From October 1888 to November 1913 the spines were blank.
#2: From Dec. 1913 to Dec. 1959 the spines read: Mo./Yr. The National Geographic Magazine Vol./No.
#3: From January 1960 to April 2018 the spines included content information (as you've shown).
#4: From May 2018 to (?) the spine is the "New Format" (again as shown by you).
Thanks for the post.
Don't forget the October 1917 Special (Army/Navy waterproof) Edition
look how thin the current NGM's are !
. . . there is also a big difference in the paper they are using for the cover, and interior pages, as per the Editor's page. I find it noteworthy that this is the first time in a while that a physical change in the paper was an improvement, and not a downgrade (i.e., thinner paper) !
Just noticed it on the March 1942 cover...