Latest version of the current Source Engine?

Can someone confirm it’s using the updated engine? Do we have multicore CPU performance now? Better textures and shadows and draw distance?

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.