since now there's actual a guaranteed release date within may/june i will now put this here.
When the soundtrack is out (which is imminent) Black mesa source dev team confirmed it would be out two weeks after.
This is a 100% complete entire remake of Half life 1 in the source engine, been in development since around 2007/8.
Almost every single model/Texture/sound is replaced. No Valve textures/sounds/etc. to be seen!
Feast your eyes on over 2,000 custom models and 5,000 custom textures!
Experience over 2,000 choreographed scenes and over 6,500 line of dialogue from all new voice acting!
Immerse yourself in an all new soundtrack and over 2,300 custom sound effects!
100% free and 100% Made entirely in source.
just keep checking Black Mesa: A Half-Life 2 modification for the soundtrack stuff (the page is already up for it, it just needs to be available to download for the 2 week countdown to start: http://www.joelnielsen.com/bms/ .)
(just a note, requires ANY source game to run black mesa source. This includes free to play TF2.)