If you've got a Nexus One handset, you're going to be first in line for the latest and greatest build of Android OS 2.2 (Froyo). The N1 runs stock Android the way Google releases it, without any annoying user interfaces to slow down your update path.
A new build of Froyo's just been leaked, and of course the experts at XDA Developers found it. This is an incremental release, with a new radio that was first seen in Korea on their Nexus smartphones. The radio definitely showed some speed improvements for those who tried it out. It's version 5.08.00.04 if you're keeping track, from the Korean build FRF91.
But that's all, folks. No Google applications, just a little optimization. In fact many of the included Google apps needed an update as soon as the new ROM booted up. At least Nexus Ones can stay ahead of the customized Froyo builds for devices with their own UIs. (Helloooooo DROID 2!)
The rest of the version numbers:
android version: 2.2
kernel: 18.104.22.168-27237-gbe746fba [email protected] #1