The update will also introduce a few new maps to the TF2 mix -- Arena_Watchtower, an expansive map with a focus on long, sniper-friendly sightlines; CP_Junction, a tight-quarters map that's more suited for the game's explosive classes; and CP_Egypt, a "visually striking", Dustbowl-esque control point map. The update will also patch in some gameplay tweaks to the pre-existing CP_Fastlane map.
Oh, and the newly updated Scouts will also be able to unlock their 35 new class-specific achievements, which we've posted after the jump. Valve should be dropping further info on the pending patch tomorrow -- we'll keep our single-earphone-covered ear to the ground to let you know when the final tease drops.
Gallery: Team Fortress 2 Scout Update