Official support for CS:GO (finally).
Overdue update of the SQLite library to current.
Better support for handling max human players and partial map names in L4D, L4D2, and Swarm (along with CS:GO).
Added SDK Hooks as a first-party extension.
Split all ep2v games to their own "engines" (only CS:S is done at the moment, the rest will be done before release. More on this later)
Added more native functionality for TF2 and CS:S.
Added support for runoff voting in mapchooser.
Added ability to use admin overrides with regular console commands.
Better validation of Steam IDs in the auth system to prevent even the craftiest of abuse.
Fixes for multiple issues with cloned handles.
And much more.