Earlier today, we reported that Google Buzz is, in a sense, getting serious – it’s supposed to be integrated with Google Apps in the near-ish future for the sake of enterprise and government users.  But it’s getting sort of casual, too, landing in Gmail for mobile this afternoon.

About a month ago, Google announced a new version of Gmail for mobile for iPhone and Anrdroid devices. Now, they have introduced "the Iterative Web App," an initiative, in which they will release features for this new version periodically.