Updates to Team Fortress 2, Day of Defeat: Source and Half-Life 2: Deathmatch have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
Source Engine Changes (TF2, DoD:S, HL2:DM)

• Fixed a client crash related to rendering models
• Fixed a client crash related to audio in the web browser
• Fixed servers crashing with the error message "Overflow error writing string table baseline"
• Fixed a missing material when setting mat_viewportscale to anything other than 1
• Fixed windowed mode under certain window managers for the Linux version
• Improved performance for the Linux version

Team Fortress 2

• Added new promo items
• Fixed buildings not always being downgraded at the same rate by the Red-Tape Recorder
• Fixed not hearing the sound for the Shred Alert taunt while playing Mann Vs. Machine
• Fixed players spamming the Shred Alert taunt in spawn rooms by changing their loadout presets
• Fixed giant robots sometimes getting stuck in Mann Vs. Machine
• Fixed a problem where traders that send in-game trade requests would receive the error message "The other player is currently busy trading with someone else" when the problem was actually related to Steam Guard settings