Fellow tech blogger Michael Arrington has scored some exclusive screenshots of Google's upcoming AJAX-powered Calendar web application. Dubbed CL2, Google Calendar is a fairly long way from a public launch and is currently under a very strict private beta. As expected, Google services such as Gmail will be able to integrate with CL2 and might even feature SMS notifications, that is sending a text message to your mobile phone as a reminder. We'll have to wait and see what comes of it, but 30 Boxes might have some stiff competition on hand.