Source: Natural Selection3.0 Trailer: Half-Life GamingNot mentioned in the quote below but there is a teaser trailer for the newest version. I have uploaded the high res version of this for your viewing pleasure. Enjoy.
The Constellation test is slowly drawing to its close. We've released a new update for this private test, which features a number of gameplay changes to make relatively unused devices such as the alien vision mode ("flashlight") more useful. Additionally, we included a pretty big number of fixes and map updates.If you are a Constellation member, check your Notes or the Constellation Forum to download and play the new version.Enjoy yourself!