Via [url=]the Steam Community[/url]:

[quote=Valve]- Fixed the Clown's Cover-Up always showing the Red team skin
- Fixed hiding the Pyro's head when using the Friendly style for the Fiercesome Fluorescence
- Fixed the Grounded style of the Power Spike using an incorrect LOD model
- Fixed Celestial Summit and Stellar Ascent Unusual effects not following moving players
- Fixed missing prefix when the Strange Filter: Sandcastle (Community) item is applied to a weapon
- Fixed missing prefix when the Strange Filter: Lava Pit (Community) item is applied to a weapon
- Updated The Masked Fiend to fix a problem with the materials
- Updated the Dell Dynamic to fix issues with the materials, rigging, and LODs
- Updated the Sapped Unusual effect to fix visibility issues in bright environments
- Updated Blastphomet cosmetic to fix some a problem with the materials and some minor clipping
- Updated the Taunt: Borrowed Bones to add missing sounds
- Updated Taunt: Neck Snap animations to fix the MVM canteen flipping while taunting
- Updated the Nightmarish Storm, Acidic Climate, and Otherworldly Weather Unusual effects to fix a problem with the lock rotation
- Updated the Eldritch Horror and Deep-sea Devourer Unusual taunt effects to fix a problem with flickering
- Updated pd_farmageddon
- Updated .res file to work with custom huds (Thanks Aar)

- Updated cp_lavapit_final
- Updated the Underworld
- Spells now spawn one per point, in a random location
- Removed some exploits

- Updated pl_spineyard
- Replaced some of the materials and models
- Fixed a missing material
- Significantly improved skeleton navigation
- Reduced the health of skeletons to 130 HP
- Increased the weapon spread of skeletons to reduce their long range damage
- Increased the number of pumpkin bomb spawns
- Improved sound effects
- Various detail fixes
- Fixed being able to build in the first Blue spawn

- Updated pd_mannsylvania
- Added new custom voice lines of Merasmus Gargoyle Notifications
- Better player clip and fixed players stuck in some areas
- Placed more bat's models on entire map and randomised their animations
- Improved 3d skybox
- Disabled trigger_hurt in ending sequence after 15 second when game ends
- Minor cosmetic fixes

- Updated zi_murky, zi_atoll, zi_devastation_final1, and zi_sanitarium
- These changes are aimed to make playing as a Zombie more engaging, and to weaken the Human meta of bunkering without hurting their ability to roam and fight
- Zombie Spy is now passively cloaked, only losing his cloak for 3 seconds when attacking or using his "Reveal" ability
- This change will allow Zombie Spy to circumvent sentry guns that are watching large areas, and allow him to sneak into or around strongholds
- Zombie Soldier's "Pounce" ability is now significantly higher, and has a 5 second cooldown (from 8)
- These changes will bolster Zombie Soldier's role as a recon pick and a roof buster, capable of launching through sentry fire
- Zombie Sniper's "Spit" ability now damages buildables
- Zombie Sniper now drops a puddle of spit on death
- Both of these changes will make you feel like you're contributing more with your spit, and if that's not enough, you at least get to drop one on death to cause a small area of denial
- Zombie Pyro no longer drops small health kits
- Zombie Pyro's "Hellspawn" passive now releases a flaming explosion on death on top of the existing gas passer cloud
- These changes should strengthen their afterburn capability, and make them a scarier threat if you let them too close
- Zombie Heavy's "Tank" ability now adds the Battalion's Backup buff (immunity to critical hits, 35% resistance to regular damage, and a 50% resistance to Sentry Gun damage)
- Zombie Heavy deals 20% increased melee damage
- Sentry and crit resistance will bring Zombie Heavy's effective hp up much higher, buffing his role as a tank that you really oughta stay away from. His slower speed is unchanged, so you're still able to run. The changes will just make bunkering much more difficult with him around.
- Zombie Engineer's EMP no longer rolls on shallow surfaces, and now does 110 damage instead of fractional damage
- This change will turn EMP grenades into a much more immediate threat, instantly breaking mini sentries, crippling level 1 sentries, and wounding other buildings
- Zombie Scout's "Speed Demon" passive now comes and additional 25% jump height boost
- Zombie Scout already has a triple jump, but increasing jump height will make him even more of a pest buzzing around your head, and better at climbing onto roofs once a hold is destroyed
- 1/5 of the server will be converted to zombies at the end of setup (from 1/6), and will also round up
- It's become clear that there simply aren't enough zombies selected at the start of the round. Initial pushes should be easier to perform with a couple more units.

- Sentry Guns deal 40% damage to zombies (from 60%)
- Engineers are simply way too oppressive. The dispenser is invaluable for the sake of ammo, and the sentry still has use as a knockback tool, but now should be significantly less frustrating to play against.
- Demoman shield items no longer halve the damage taken by zombies
- He was just too strong and incredibly unfun to duel. The extended reach of swords is already amazing against melee-only characters. His strong maneuverability is unchanged.
- Zombie Medic Heal cooldown reduced to 7 seconds (previously 11)
- All Zombies except for scout, heavy, and spy, now have +25 HP (from +10)
- Fixed a bug where Zombie Demo could detonate himself before the charge had started
- Fixed a bug where Bonk! Atomic Punch could persist through Zombie conversion
- Fixed various issues caused by Zombie Demo surviving his own charge
- Fixed issues with the Zombie HUD not correctly displaying certain strings
- Fixed exploit related to adding additional time
- Added additional HIDEHUD bits to remove irrelevant HUD elements when playing Zombie
- Added an instructional video (Thanks Funicular!)

- Updated zi_murky (additional changes)
- All of the roofs have been covered in clutter such as vines and tires, and are no longer buildable
- Added more trees for cover
- Added small fence to RED spawn to make it easier for zombies to approach up the wooden stairs
- Added a ramp leading to the yellow shack's roof
- Added occluders to central shack
- Improved fog
- Improved skybox
- Improved readability of chicken wire fences, and added more around the docks
- Adjusted prop fades
- Tweaked detailing
- Fixed erroneous clip brushes
- Fixed several stuck spots
- Fixed missing television model

- Updated zi_atoll (additional changes)
- Added an extension to the roof of the turbine building
- Added nobuild entities to debris that could potentially hide sneaky sentries
- Added a broken window on the turbine building
- Clipped the spiral stairs behind the lighthouse (thanks Aar!)
- Reduced performance impact of water
- Increased size of trigger_push entities on the tree tops
- Improved collision on the displacement on the beach near the fishing house
- The spinning cat has been fed

- Updated zi_devastation_final1 (additional changes)
- Added new route from second level zombie spawn to the top floor
- Adjusted some zombie spawns
- Made some zombie spawn exits easier to leave
- Clipped off bottom floor stairs
- Increased Round Timer to 3 minutes and 30 Seconds
- Increased Reports of Gators

- Updated zi_sanitarium (additional changes)
- Replaced some of the materials and models
- Fixed a missing material on a prop
- Fixed a pixel walk in the skybox[/quote]

Rumor has it:

- Size is ~185 MB