I never understand why people give half of a shit when prices and models show up in some retailer's inventory system (unless that retailer is also the manufacturer). Anyone in control of an inventory system could enter a bunch of place-holders to prepare for the iPad Mini. Notice how they entered WAY more models than there would possibly be? It's because the person who created those entries was just trying to cover every possibility. He/she didn't have any special information at all.
Low Capacity Black Wifi iPad Mini
Medium Capacity Black Wifi iPad Mini
High Capacity Black Wifi iPad Mini
Low Capacity White Wifi iPad Mini
Medium Capacity White Wifi iPad Mini
High Capacity White Wifi iPad Mini
Low Capacity Black 4G iPad Mini
Medium Capacity Black 4G iPad Mini
High Capacity Black 4G iPad Mini
Low Capacity White 4G iPad Mini
Medium Capacity White 4G iPad Mini
High Capacity White 4G iPad Mini
Not speculating on sizes beyond what they listed, but there will most likely be about 12 SKUs, 18 in this country since there are still Verizon and AT&T 4G models for the iPad (3).