The update details plans on what the dev team is working to fix in the next beta patch including server crashes, low frame rates and more. It states that a patch with those fixed should be going online sometime on Monday. If you still want to get in on the closed beta its still available for purchase for $34.99 at the game's official web site. The purchase will, of course, allow folks to get the final version of the game at no additional cost when its ready.
Gallery: Natural Selection 2