Avatar 3D Blu ray "Collectors Edition" will be available in NZ from October 24th. (Globally from October 15th)
Mighty Ape and Fishpond are already offering it via pre-order. I have it on pre-order.
I'm sure it will be sold retail, too, at about the same time.
I bought a 3D blu ray player last week to use with my LG D2542P 3D PC Monitor...and the first video I wanted to buy was Avatar 3D...only to discover it wasn't available due to an exclusive distribution arrangement with Panasonic for the past 18 months. The only way to get it was with a Panasonic 3D TV.
Until (almost) now.
I had thought about ordering one via Amazon - shipping on the 15th - but apparently it's hard to crack the region coding for Blu ray for the Philips player I have (BDP5200 - 3D / Wi-Fi)