Via [url=https://steamcommunity.com/games/CSGO/announcements/detail/498333631688738239]the Steam Community[/url]:

[quote=Valve][b][u]MAPS[/u][/b]
- Updated Palacio, Rooftop, and Golden to the latest Community Workshop versions.

[b][u]MISC[/u][/b]
- Adjusted AUG and SG 553 scope dot sizes.
- Added game options for dot scale and sniper rifle scope thickness.
- Added letterbox for camera path transitions.
- Fixed a regression in certain bullet penetration scenarios.
- Stability improvements.

[b][u]MAP SCRIPTING[/u][/b]
- Fixed a bug where old callbacks could be invoked after a script reload.
- Fixed a bug where new callbacks could be invoked multiple times after a script reload.
- Fixed missing Instance.IsFreezePeriod.[/quote]