
Android turns 2 officially today as its first SDK release was made publicly available 2 years ago to the day on November 12th, 2007.
Last week on November 5th was the 2 year anniversary of the Open Handset Alliance which are the manufacturers and service providers along with Google that are behind Android.
But today November 12th is what Dan Morrill and other Android engineers consider themselves as the true birthday of Android itself.

Also interestingly before Android releases went on to the pastry naming scheme starting with Cupcake for version 1.5 there was a previous naming scheme.
This became apparent with the Halloween decoration of the Droid statue as there was a tombstone next to it with the inscription of RIP Petit Four as I originally thought it was for the Droid dog statue that was stolen.
Jean-Baptiste Queru notified me that the 1.1 release was actually called Petit Four before the Android team settled on the alphabetic pastry naming pattern.
So here is to more Android birthdays which will continue to add more pastry statues outside the GooglePlex.
Congrats on two years of mobile awesomeness! When is the code for Android 2.0 going to be released?
Android 2.0 Donut SDK is available at http://developer.android.com/sdk/android-2.0.html but if you mean being sent "over the air" OTA then that depends on the phone and service provider.
What I mean is the code for AOSP being uploaded to android.git.kernel.org.
I am very interested in how the android platform, mainly the community evolves and challenges Apple.