"Day of Defeat: Source, Valve's World War II-themed multiplayer action game, is approaching beta and will be available early this spring via Steam.
A team-based multiplayer game that cast players in the Axis vs. Allies battles of Western Europe circa 1944,
Day of Defeat: Source leverages the power of the Source engine to introduce integrated physics simulation technology, all new audio, updated maps, enhanced effects and more.
More information about Day of Defeat: Source will be released in the coming weeks"
- Source [2]

"Ok, Valve has very generously said that DoD:Source beta testers can speak publicly about testing" -Shane
11 pages and counting of Beta Testers' Q & A [3]

You can discuss the good news further in the SunLit DOD thread [4].