Don't know for sure but I believe it will be, and I am pre-ordering it believing it to be so. If it isn't then they're doing something strange.If anyone gets any information on whether the BluRay will play on multi region players, please post it here! Thank you!
Blu-rays that Disney released in the US, they did lock them down to that region in the beginning, but the last 10 releases (probably a bit more too) that I have purchased have been region free. Which I am so thankful for as Disney blu-rays in the US are great. You get cool shiny slipcovers, and no large ratings classifications plastered over the packaging.
If I was to purchase locally (in Australia) I would miss out on the slip covers, have huge ratings classification labelling printed on them (wish they were just stickers so I could take them off) and they would also be a bit costly. Buying them from Amazon (with postage included) ends up being quite a bit cheaper!
The only bummer is the Disney movie rewards points from the US don't work in the Australian rewards site, so its kinda sucky I can't use the US rewards site instead to redeem.