Well done, Google.
This release doesn't change Google's strategy nor the fact that they will continue to release Android's source code in the future with a significant delay compared to early-access partners. There's no reason to congratulate them now nor complain louder some months from now, they'll continue to do what makes sense for them from a business standpoint. The only news are the yet-to-be-discovered jewels in the just-released source code.
They release this time.. you and I can only hope that they keep doing it in the future. It wouldn't be all that surprising if it would go closed source (except for key partners) at some point (and except for the GPL content).
Specially when any company could just rip the source, make it nicer looking and release their own version of Android and close the source on that... oh look it has a name, it's called MIUI!
Imagine if many cheap Chinese manufacturers release decent phones with it, that cost 3x cheaper than the rest, and no Google stuff inside, no control, yada yada. Well, personally I'd get one :-)