Hey all, I was digging around and making some posters today in SFM when I came upon a few bits of content that aren't actually in TF2 yet. It appears they were added with the January 12, 2015 update to Source Filmmaker.
The official news post reads:
- Added missing materials from Left 4 Dead Content Pack DLC
- Added latest Team Fortress 2 content
- fixed Add Team Fortress Item to work on non-hwm player models
They added more than just the "latest Team Fortress 2 content", though. Specifically, they've added a bucketload of new taunts, which mostly involved updating previously class-specific unreleased taunts to be all-class. I've composed previews of all of the new taunts below.
Class-Specific
Scout: "The Boston Breakdance"
http://i.imgur.com/3Kd04EA.png
This taunt was previously added to the Steam Workshop under the same name. It has not yet been marked as approved.
Heavy: "taunt_russian"
http://i.imgur.com/Mw484nb.png
This taunt was leaked into Source Filmmaker sometime last year, but previously only consisted of a "taunt_russian" animation. In the January 12th update, additional "taunt_russianin", "taunt_russianinblend", "taunt_russianinterior", "taunt_russianout", and "taunt_russianoutblend" entries were added. None of these animations appear to function, and based on their nomenclature, it seems like this taunt won't be a partner taunt - partner taunts have "intro", "start", and "success" tags for the idle animations while waiting for a partner. This is an all-class taunt, but only the Heavy variant has all of these additional entries. The Heavy's version is now very long.
All-class (or multi-class)
"taunt_loot"
http://i.imgur.com/sDSgeyL.png
All classes except for the Heavy and Soldier have this taunt so far. It is not a partner taunt and has drastically varying lengths. Additionally, some of the animations appear to be sped up (Engineer), while others are slowed down (Sniper). This hints at this taunt becoming all-class with similar lengths by the time it gets added to the game, a-la the Schadenfreude or Shred Alert.
"taunt_russian"
http://youtu.be/CN99SnJwhCc
Previously only an unreleased Heavy version of this taunt existed. Now it's all-class.
Previously unreleased
Soldier: "taunt_gimmie20"
Soldier: "taunt_slit_throat"
Pyro: "taunt_sit"
All of these taunts have existed for over a year in SFM. As of this most recent update, these taunts no longer work, even though they still have entries. Because of this I have no previews, but I'm sure you could find some with enough googling.