Only 0.6% of Android devices use Android 3.0 or 3.1 Posted by zeddez on Saturday July 02, 2011 @11:14AM from the developer.android.com dept. http://developer.android.com/resources/dashboard/platform-versions.html ( 1 comment | on HN )
(Edit for correction. 3.x is not solely for tablets, just primarily with them in mind.)