Following the start of orders for the Retina iPad mini a few hours ago, Apple has issued a press release officially announcing the launch. The release notes that the Retina iPad mini will not only be available for online orders, but also through the in-store Personal Pickup mechanism by which customers can check stocks at their local Apple retail stores and purchase online before heading to their stores to pick up their orders. Walk-in sales will apparently not be offered until supplies improve.
Availability through Apple's online store appears to be holding up for the time being, with the company's U.S. stores showing the same shipping estimates seen at the time orders went live: 1-3 business days for 16 and 32 GB Wi-Fi models and 5-10 business days for all other models.
Update: Some U.S. retail stores on the East Coast are beginning to show availability of Wi-Fi models for Personal Pickup. Many stores have all 8 color/capacity Wi-Fi configurations available at the moment.
Article Link: Retina iPad Mini Launching with Personal Pickup, but No U.S. In-Store Availability Yet [Updated]