Apple has updated the Apple Store iPhone app introducing a new Express Checkout feature. The Apple Store app allows iPhone users to lookup and purchase products from the online Apple Store or reserve products at any U.S. Apple Store for local pickup. Users can also use the app to request help and make Genius Bar and One to One reservations and users in the U.S. and the Netherlands can take advantage of EasyPay to make self-serve purchases in an Appleā¦