4 new maps!
From most to least interesting: pd_watergate, where 'pd' is apparantly a new 'player destruction' gamemode; koth_probed, which is by the same guy that made cp_glassworks which we enjoyed in the last highlander season; an arena map; and for some reason a 2fort reskin, because people still play 2fort in 2015???
There's also some cosmetic stuff that I don't care about but will keep up fresh interest in a game that could easily have been left to die years ago.
Considering that the Gunmettle update already brought a lot of balance changes I think this is a reasonably sized update, more maps is always good