The Croot-Lev-Pach-Ellenberg-Gijswijt bound on cap sets

Simple Set Game Proof Stuns Mathematicians | Quanta Magazine

quantamagazine.org

Lots of stuff happened a month ago (I still need to make a post about how we now know E_8 is an optimal sphere packing). The additive combinatorics blogs kind of exploded:

Addenda: