The patch has been released:
Update Civilization IV to version 1.09 with this patch.
Changes:
Increased cost of Apollo Program.
Increased SS parts cost.
Animal Husbandry reveals Horses.
Tweaked Rifling, Chemistry, Steel, and Railroad tech costs.
Increased late-game tech costs.
Can now add two specialists in size 1 city with Mercantilism.
Final score is now modified by difficulty level.
Speed up load times.
Global performance enhancements.
Added:
Include WB map size in the description field.
Save login name.
Added password encryption.
Added regenerate Map Button to World builder Map Mode.
Checkbox for using low resolution textures.
More logging for init failure.
Minspec / video memory checking.
Added ability to change to and from fullscreen while in-game.
Holding "shift" during startup will clean out the cache.
Improved bink playback, added ini options.
Fixes:
ATI issue Failed to Init Renderer Fixed.
Multiplayer Lobby list jump problem and lobby crash fixed.
Fixed war weariness calculation bug.
Units maintain their name when upgraded.
Fixed Gold-for-Gold diplo exploit.
Fixed no research choice overflow exploit.
Fix for voice initialization crash.
Fix addressing takeover AI and retirement OOS.
Fixed issue with diplomacy text being always used in its first form in the translator.
Popups, screens, and diplomacy properly cleared when exiting from main menu.
Games protected by admin passwords (only) cannot be loaded if the version is different from the one that created the save.
Fixed bug where player could not offer any deal to other human in PBEM/Hotseat.
Sorting by date on domestic advisor now works.
Fixed bug where settlers could not move if the strategy layer was selected.
Fixed Ironworks.
Fixed AI units not obeying open borders rules on declaration of war.
Fixed bug that prevent placing of units in world-builder.
Fixed bug that prevented gifting of units to a human player.
Stack attack infinite loop fixed.
Civic screen update fix (wasn’t showing the right maintenance and anarchy values).
ctrl-g crash fix, optimized city bar art.
Fixed right-click menu crash.
Intro movie crashing problems.