We’ve known it was coming, and today at I/O it did: Google made the next version of Android, v2.2, official. 

Most of what we told you a week ago is included: Wi-Fi tethering (mobile hotspot), Flash support, better Exchange support, and a 2-5x speed bump over Android 2.1. 

But there are some new over-the-air (OTA) goodies as well.  A new OTA app installation service will allow you to find software on your computer and have the app installed on your Android phone wirelessly over its data connection (yea!).  A new Windows (and Mac?) utility will also make it possible to stream all of your iTunes music OTA to your Android phone.  And a Chrome browser plug-in for the PC will allow you to send things like maps and directions to your phone wirelessly.  Pretty cool stuff.

Some existing Android devices will get the 2.2 upgrade “in the coming weeks.”  You can read all about Android 2.2 here or check out the video below.

We’re already downloading the SDK.  You?