From the Oxford English Dictionary:
More than 1,400 new words, senses, and subentries have been added to the Oxford English Dictionary in our latest update, including nothingburger, fam, and not in Kansas anymore.
Learn More From OED
Complete List of All New Words (September 2018)
New Words Notes For October 2018
by Katherine Connor Martin, Head of US Dictionaries
OED 3: The Revisioning (October 2018)
by Craig Leyland, Senior Editor
Raking Through Dunghill and Rehabilitating the Dunghill Duck: October 2018 Update
Jonathan Dent, Senior Assistant Editor
A look Under the Bonnet in the October 2018 Update
“This update also sees the revision of a number of words in the English language that have begun to establish multiple uses far from their original meanings over time.”
by Graeme Diamond, Editorial Content Director