I also wondered ... is there no firmware to download and flash on your device? We have a nexus in the lab and I would love to try froyo out.

With Apple, you always get the new versions/betas the same day they are announced and can play around with them.

Could also smb. help me, I'm new to Android and I'm just wondering how easy is it to flash my custom firmware on a google nexus (bought over the web store)??