Black Mesa “submerged” in late 2009 after the dev team missed their 2009 release date and decided to put even more of their time into developing the mod, and far less time into doing PR, because, let’s be frank, when you’re dealing with a free mod like Black Mesa, it really does do its own PR.
So we haven’t seen any media releases, and any new media has been largely sporadic and contained to either the mod’s wiki or developer’s portfolios.