Apple has launched its in-store pick up option for the Retina iPad mini. The Reserve and Pick Up page now lists the following locations with stock available (thanks @larrylarry). All locations are only showing Wi-Fi models available in 16GB, 32GB and 64GB versions as of writing, but of course this will change.

• Toronto: Eaton Centre, Fairview (only 32GB Wi-Fi), Sherway Gardens, Yorkdale
• Fairview Pointe-Claire
• Brossard, DIX30
• Montreal Sainte-Catherine
• Burlington, Mapleview Centre
• Waterloo, Conestoga (only 64GB Wi-Fi)
• Markham, Markville Shopping Centre
• London, Masonville
• Mississauga, Square One

As you can see these locations are primarily in Ontario and Quebec. Expect this to change quickly—feel free to leave updates in the comments in you notice a new location going live in your area.