Carlos Montero, Project Leader of the Black Mesa development team has announced that their take on the original Half Life, using the Source engine, will launch on September 14th.
“On September 14th you will see the first release of Black Mesa! This will include our re-envisioning of Half-Life all the way up to Lambda Core. We believe this is a great way to provide a complete-feeling 8-10 hour experience with a solid ending, make our fans happy and help us make the best overall game possible.”, wrote Carlos on the Black Mesa forum.
Carlos also announced that the Black Mesa soundtrack is available to download now, with the bonus that gamers can pay as much or as little as they wish. Black Mesa has been in development for 8 years. A trailer apparently showing gameplay footage was also leaked a few weeks ago.
Source: Black Mesa Source Forum