An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include:

• Fixed Heavy exploit related to infinite overheal
  
• Updated localization files
  

- Fixed some bugs with lifesteal amplification (caused things like heart and divine favor to affect it)

An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include:

• Fixed a server crash exploit
  
• Updated localization files
  

- Fixed an exploit which duplicated neutral items.
- Fixed Primal Split immolation dealing too much damage.

- Further minor camera adjustments following the previous iteration

- Fixed an XP bug that was recently introduced that caused streaks to give much more XP than intended

In this update we are introducing a new system for gathering data on the type of changes that are harder to evaluate or predict without very large number of games, such as gold bounty formula changes.

We expect the number of times that we actually do this during the year to be very low, however when we do it it'll be during weekdays only at the lowest point of user activity, between 4 and 6PM Seattle time. In addition, we are adding a convar "dota_disable_experimental_gameplay" that can be used by players to disable it. Any gameplay changes will only be active in matchmaking games where no players have the convar set. The changes will never be active in lobby and league games.

We recognize that in some cases players will back solve what changes were done, however we won't announce changes ourselves in part because we don't want players to overcompensate with knowledge of them and because generally we prefer to not reveal potential upcoming changes.

Although the type of changes we are thinking about, like gold distribution, take much more than a game or two to show their full impact, we will still be able to get meaningful data and analysis on the direction and scale of changes.

- The rarity of “Very Rare” treasure items has changed to be closer to the halfway point between “Rare” and “Ultra Rare” items.

- Fixed a bug with combining Bloodstone or Rapier when some components were in your backpack.
- Fixed the interaction of backdoor protection and Lone Druid's Bear and Brewmaster's Primal Split.
- When selling stacked wards both sentry and observer wards now restock correctly.
- Fixed a bug where a gem stolen from the enemy team would credit the wrong player with bounty for wards killed.
- Fixed a bug where a creep killing a ward did not award bounty gold to the player who placed the detection.
- Fixed the interaction of Lone Druid's Spirit Bear and Magic Lamp.
- Dark Seer's Surge and Legion Commander's Press the Attack with the AoE talents will no longer cause the caster to pivot when self-casting.

We are making our smurf detection system more sensitive in this update. This change will much more proactively target potential smurf accounts, but may on rare occasion give a normal player extra MMR.