Steam News announced the availability of a new "Palermo Update" for Day of Defeat: Source, adding 51 Steam achievements to the World War II shooter along with other Steam Community features and a new map, all outlined on this page. This all paves the way for a free Day of Defeat weekend that kicks off tomorrow. Here's the announcement:

Leveraging the recently released set of free services available in Steamworks, the Palermo Update adds 51 achievements to Day of Defeat: Source, player avatar displays in the scoreboard and win panel, and detailed player statistics that are integrated with the Steam Community features (www.steamcommunity.com).

In addition, this update adds support for popular features introduced in Valve's Team Fortress 2 (TF2), the PC title named multiplayer game of the year by Gamespy.com and PC Gamer. These include "nemesis/revenge" freeze cam and new effects driven by the particle system introduced to the Source engine for TF2.

Finally, this update also introduces a new map, Palermo, which is a remix of the most popular community map, dod_salerno, originally created by Magnar "insta" Jennsen.

For more information, visit the Day of Defeat: Source Palermo site.