New updated Froyo build discovered for Nexus One
At first, the developers thought they had stumbled on to an Android 3.0 ROM because of the use of the letter "G" in the build description, which, it had been hoped, could have stood for the "Gingerbread" code name for the next level of the Android OS. Instead, what was discovered was the next build up for Froyo. There is some speculation that installing this on your device could prevent you from visiting the Android Market. There has been some discussion on forum boards on how to handle this problem, which you can read by hitting up this link.
Also, because this is not an officially recognized build, just remember that installing this on your device could lead to plagues, curses, a busted warranty and a bricked phone. Just make sure the risk you are taking is worth the risk you are taking. And if you are adventurous and do install this ROM, by all means, let us know exactly what changes you have spotted from your phone.
HTC Nexus One Specifications | Review