Bit-Tech has been up to Valve's offices in Seattle to play through The Lost Coast, the super-duper add-on level for Half Life 2. They've got an article up talking about the technology behind the level (it's not just HDR!) as well as screenshots from throughout the level, a brief summary of the narrative, and our thoughts on Valve's work. They also have a few exclusive snippets of news on Day of Defeat: Source and Aftermath!
Many people are getting hot under the collar over the delayed release date because they possibly think Lost Coast is something that it is not. Aftermath is the expansion pack. Lost Coast, as has been stated by Valve since it was first unveiled, is a single level technology showcase.
Before we received playable code, we asked innocently how many hours of gameplay there would be. In terms of end-to-end gameplay, the answer is measured in minutes, not hours. Be warned: if you are expecting loads of new story, you will be disappointed, and unnecessarily so. Marvel at the graphics, listen to the Developer Commentary, but take it all at face value.