There has been some confusion from those who have placed Google Nexus 7 preorders regarding when they can expect their tablets to arrive in the mail (see here and here, for example). But now, Android Police reports that Google will ship out all preorders made through the Google Play store over the next three business days, with some tablets already having been shipped out on Friday. Google says that once customers’ orders have shipped they’ll received a confirmation email along with a tracking number so they know exactly what their shipment’s status is.