I guess it was only a two day reveal for the Love and War update for Team Fortress 2. As such, the update is now out!
Love & War Update
- Added 5 new weapons, 15 new taunts, and 43 cosmetic items for the Love & War update
- Partner Taunts can now be performed with the opposing team
- Added a new Taunt Loadout with 8 slots so multiple taunts can be equipped at the same time
-- Taunts are no longer equipped in the Action Slot
-- Pressing the Taunt key in game now brings up the new Taunt Selection menu
-- Pressing the taunt key while the Taunt Selection menu is open performs a weapon taunt, or joins a partner taunt

Mann Co. Store
- Added 15 new taunts and a taunt bundle
- Added 5 new weapons and a weapon bundle
- Added 44 new cosmetics and a cosmetic bundle
- Added "Taunt" category into the store
- Added Mann Co. Stockpile Crate Key
- The "Hats" and "Misc" categories have been merged into "Cosmetics"

Items
- Added the Mann Co. Stockpile Crate to the droplist
-- Each Mann Co. Stockpile Crate can be repeatedly shuffled to contain a set of 4 possible items
- Added the Mann Co. Audition Reel. Contains taunts and a rare chance at an unusual taunt
- Updated Mann Co. Crates to display which Unusual Series they can potentially output
- Added Bread Box Special Crafting Recipe. This recipe will no longer be available after July 9th, 2014. Items from the Bread box have a chance to be strange.
- Added crafting recipes for newly added weapons
- Added Killstreak Kits to MvM for newly added weapons
- Added OzFortress Season 11 tournament medals

Weapon changes and updatesMisc Changes
- Updated the Halloween holiday to automatically be enabled when the server runs an _event map
- Added a check to prevent achievement announcement spam
- Converted several weapon models to use the c_models system
- Updated the localization files

Bug Fixes
- Fixed an exploit where charging Demoman could turn more than allowed
- Fixed a bug where Halloween spellbooks were overriding PDAs and Disguise Kits
- Fixed The Director's Vision taunt not playing both variations for the Pyro
- Fixed the Pyro's spell audio not sounding like the rest of the Pyro's audio
- Fixed a bug that would sometimes cause items to unequip themselves
- Fixed a dedicated server crash related to using 'mp_forcecamera 0' with one player on the server
- Fixed a regression with the trigger_gravity entity not correctly applying its settings
- Fixed another exploit where Engineer buildings could build up a large amount of health
- Fixed a server performance issue related to the item_teamflag entity
- Fixed the itemtest command
-- Fixed cosmetics shared between multiple classes not rendering correctly
-- Updated the cosmetic item list to sort by name

Map Fixes