LIDAR mapping found that Mt. Tecumseh in New Hampshire is only 3,995 feet tall, potentially* removing it from the list of 4000-footers/
Or so says this article by the Appalachian Mountain Club.
*I added the “potentially” after the comment below noted that I’d jumped the gun a bit
Mt. Tecumseh has NOT been removed from the list. The AMC 4,000 Footer Committee has made no formal decision yet as to its status. The AMC article is a bit premature as all of the data is not in yet.