Preview at WWDC likely in June, followed by September launch.
Apple Sells Out of Remaining Launch Day iPad Mini Pre-Order Stock
Availability of the black models in the U.S. online store began to slip on Saturday, when shipping dates for the 16 GB Wi-Fi model moved to two weeks. The 32 GB and 64 GB models have now followed suit, and all Wi-Fi iPad mini models are now being quoted two-week shipping estimates. Apple is still quoting its original "Mid November" estimate for cellular-capable models in the U.S., with other countries seeing "Late November" estimates.
The iPad mini will officially launch this Friday, November 2. For those who were not able place pre-orders in time, Apple's retail stores will begin sales at 8:00 AM on Friday.
Apple's fourth-generation iPad is also launching on Friday under a similar schedule that will see cellular-capable models delayed until mid-to-late November. New pre-orders for Wi-Fi iPad models are currently seeing shipping estimates of one week in many countries, with some seeing two-week estimates.