http://www.teamfortress.com/post.php?id=11023
http://www.teamfortress.com/post.php?id=11024
I'm sure there will be hats in the update too.
TF2 has been evolving since the day we released it back in 2007. Unfortunately, as players' tactics and abilities have grown, so have the bugs and exploits in some of the maps. For example, since Badwater shipped in The Heavy Update, TF2 has added more than 140 weapons to the game, some of which introduced new capabilities: sentry jumping, rocket jumping with no health cost, the ability to pick up and move your buildings. All of these are just a fraction of the many ways players can now turn maps like Badwater upside down.
It didn't take long before clever players discovered how to use sentry jumping to build on roofs, Jumpers to move quickly behind enemy lines and spawn camp, and sneakily place buildings inside of their spawns. While we love players coming up with new and inventive ways to win, let's face it: It's never fun to be gunned down from above and behind.
And Badwater is just one of the maps with fixes in this update. In fact, the majority of maps in TF2 have gone through the same process. By eliminating these exploits and bugs, players can once again feel like they understand threats and the dangers presented in combat spaces.
http://www.teamfortress.com/post.php?id=11024
To start with, let's look at the "banner" items for the Soldier. The most popular of these by far is The Buff Banner, which provides an offensive buff enabling nearby teammates to do additional burst damage. Conversely, The Battalion's Backup, another Soldier "banner" item, is barely ever equipped. The Backup's owner-equip rate is well below what we'd consider healthy, with less than 15% of players who own it ever equipping it. If this data wasn't enough, the feedback we've gotten from the Backup's owners easily corroborates the lack of interest.
Clearly, we needed to bring The Battalion's Backup up to parity with the usefulness of The Buff Banner. Previously, The Battalion's Backup rewarded players for taking additional damage, making it a frustratingly high-risk item. We found that most Soldiers would die well before they were able to build a full charge. When the next update ships, The Battalion's Backup builds up its charge by dealing damage rather than receiving it and provides additional damage resistance while active.
Let's look at another example with the opposite problem: The Dead Ringer. At roughly 80%, the equip rate for the Dead Ringer is staggeringly high. Given the many other items available in this category, this means that players feel they don't have any other viable option but choosing the Dead Ringer. We've gotten emails from players who describe the item as frustrating to fight against, requiring too little skill from the Spies and too much from their opponents.
In our next update, the Dead Ringer will work generally the same way it always has, letting Spies feign death to escape from damage that would have otherwise killed them. However, now any damage the Spy takes after his "death" will decrease the maximum length of time he can spend cloaked. This gives any players chasing the Spy more of an opportunity to catch up and deal a real finishing blow, while also requiring more skill from any Spy trying to make his way to actual safety.
Finally, we'd like to talk about item sets. Historically, item sets have been thematically consistent sets of items that provide a unique gameplay effect when worn together. Unfortunately, these gameplay effects had two negative effects. For one, they limited player choice, making players feel like they would be underpowered if not wearing the complete set. For another, it was a balancing nightmare. An individual item that might be balanced as part of a set could feel underpowered (or overpowered) on its own.
One of the main goals of introducing a new weapon is to give players more choices that will help them explore the game in fun new ways. Set bonuses had the opposite effect, making many players feel constrained in their choices.
Set bonuses also required players to have full knowledge of other players' loadouts, including currently "invisible" items like melee-slot weapons. For example, the Croc-o-Style Kit set bonus gives any Sniper equipping it immunity to headshots. But there was no way for a Sniper to know whether a targeted Sniper had the bonus simply by looking. And this wasn't an isolated problem. Similar issues cropped up around the Scout's Milkman set bonus (extra health) and the Demo's Expert's Ordnance set bonus (extra fire resistance).
For all of these reasons, as part of this next update, we've decided to change the way item set bonuses work. Players have traded for, purchased, and crafted these items, many in order to complete the sets and get these bonuses, and we're not abandoning the bonuses outright. Instead, we've moved the gameplay bonuses to specific items within the sets, and introduced new bonuses to these sets that won't affect gameplay balance.
I'm sure there will be hats in the update too.