Both Apple Retail Stores and Apple resellers have begun receiving iPad Air stock to prepare for Friday’s launch, reports 9to5Mac. Shipments have begun showing up at Apple Stores and third party locations such as Walmart. According to the site, major Apple retail locations across the United States are getting more than 500 units of the iPad Air, suggesting that supplies of the tablet will be plentiful, as we initially reported earlier this week. International stores are also receiving decent quantities of the iPad Air.