This article explains a little more about the Google OS which it looks like at least at first you won't be able to download it and install it instead they are going to market it with the purchase of new netbooks and small devices so they can try to control what hardware it's being used with because as I mentioned in my other article driver support will be the biggest hurdle.
I would imagine that a leaked version will hit the torrent sites just watch out for fakes since it's Linux based it will be pretty easy to make a replica that looks and works like the real thing which honestly could be a good thing that's the point of open GL other developers making it better and i think that's what Google is counting on to take the pressure off it's own developers and see where it goes they are planting the seed so to speak they are marketing a new concept more than an actual product.
Also seems I was right I about the idea of no hard drive and only flash memory that's exactly what they plan to do since the point is to store everything in the cloud you really don't need a hard drive like I said lower weight less power consumption no need for security software this will change the landscape as we know it again this will not replace the need for high end computers for serious projects but this is perfect for the first time user and grandmas to...
http://www.cnn.com/2009/TECH/11/20/google.os/index.html