You can start to place our iPad Pro pre-order at several places now.

Apple iPad Pro Wi-Fi Cellular 128GB – Space Gray – Pre-Order (Ships mid November) (ML3K2LL/A)

Websites include Staples which is listing the various models.

MacMall also includes the iPad Pro models available for pre-ordering. Shipping is stated for mid-month November 2015.  You an order from MacMall here.

Apple will officially have the iPad Pro in stores later this week.

Pricing for the iPad Pro starts at $799 for the entry-level 32GB Wi-Fi only model. A 128GB Wi-Fi only model is available for $949, and a 128GB Wi-Fi + Cellular model is available for $1,079. The iPad Pro is available in the three signature iPad colors: Space Gray, Silver, and Gold.

The Wi-Fi + Cellular model comes with an Apple SIM card preinstalled. The Apple SIM lets you choose from a selection of short-term cellular data plans — from carriers like ATT, Sprint, and T-Mobile — that can be turned on for a day, week, or month