Valve did do Half Life: Source... but they did a half assed job of it. It's avilable via purchase on Steam, but the idea that someone would buy it is laughable since everything looks almost identical to the original game in detail. I think the only things they improved were the characters and weapons. Whatever they improved, it's nothing like this.
Of course they actually released something... Mods like this have a tendancy of not being released.
Of course they actually released something... Mods like this have a tendancy of not being released.