The change intends to keep the awesome Operations game mode alive for as long as possible by limiting the playlist to the 64-players mode only.
The October Update brings a multitude of changes for everything from Specializations to Maps and Modes.
Also, players can finally bind the bayonet charge to a separate key from melee attack.
Some of the most notable changes include a change to the Operations playlist, wherein the 40-player option has been disabled to keep match joining times as low as possible.