Andy Rubin just shared the new Android activation numbers, and they are still skyrocketing. The total number of Android activations has risen to 700,000 per day, up from 550,000 in November. In fact, back in November, 200 million Android devices have been activated worldwide now. This was double the number of activations they had just 6 months ago, in May of this year. It's not hard to think that Google will likely hit 250 million by the end of the year.
Source: BGR and Google+ - Andy Rubin