Half Life Mod: Natural Selection

This has been linked from PA dozens of times, but a new version of the Half Life uber-mod Natural Selection just came out. It seems like a huge cross between the nfamous Team Fortress 2 vaporware, in that the humans have a commander who gives them directions through an RTS interface, and a good Aliens(tm), becuase you have big teeth and run on walls.
So, I have like 8 hours of gaming left in me this summer. Anyone interested? Slashdot story with Bittorent link is here.