Via [url=https://store.steampowered.com/news/76348/]the Steam store[/url]:

[quote=Valve]- Updated koth_viaduct_event
- Fixed Engineers building teleporters in the spawn rooms
- Updated pl_precipice_event_final
- Fixed missing models
- Updated pl_bloodwater
- Removed an unintended clip brush passing through a BLU spawn wall
- Added occluders
- Updated pl_hasslecastle
- Fixed BLU players spawning in the wrong spawn room
- Fixed Engineers building teleporters the first BLU spawn room
- General improvements
- Updated pl_rumble_event
- Fixed Merasmus uttering round start voice lines randomly during mid round
- Fixed some misaligned textures
- Fixed a tree from hovering in underworld
- Fixed few models fading too late or too soon
- Fixed clock sometimes triggering underworld entrances during bumper kart race
- Fixed Merasmus from spawning if the race was already over
- Fixed push trigger in underworld being too low
Improved clipping around the map[/quote]