Giving devs access to freshly-announced versions of mobile operating systems on the very same day that they're announced is pretty much the way things work nowadays -- the first version of Windows Phone 7 understandably excepted -- so we're pleased to see that Google's kit for Android 2.2 Froyo is now up and running. You start out by downloading a modest 18-odd megabyte package that just contains tools with no target platforms, then you open a separate app to pull and install only the platforms you want (you can go all the way back to version 1.5, if you're so inclined). So kick off that download now while you grab l
