New content!
This weekend's Steam update has revealed some new additions for both Counter Strike: Source and Day of Defeat:Source.
Here is the statement from Valve:
The months of April and May are looking like they will be two of the busiest months for Steam since the launch of Half-Life 2. First, we'll be starting the preload and preparation for launch of SiN Episode 1: Emergence, developed by Ritual Entertainment. This is the first in a series of installments set in the SiN universe that will be delivered via Steam. Next will be the preload and launch of the first in a series of episodic releases from Valve, Half-Life 2: Episode One. The preload for that will begin roughly one month before it is made available.
Counter-Strike: Source and Day of Defeat: Source also have some new content nearing completetion. Counter-Strike: Source will see the addition of two new player models and an HDR enabled version of de_dust. Day of Defeat: Source has a new map on the way that will introduce a new gameplay mode.
Source: Counter Strike.net