This is the Asian NTSC/J version, although not yet confirmed region free on the playasia website, I asked them yesterday if the NTSC/J version of the game was region free & they confirmed that although the Japanese version is not, the Asian verion is.
So make sure you don't order the wrong version, easy to spot as the NTSC/J Japan version is titled Riot Act/Crackdown) and you'll notice the non region free confirmation tab on that one.
I can't be sure if this version will carry the Halo3 Beta, but it is pictured on the box art picture so I think it's most likely.
Please note that the item is currently on back order, this means that you are still able to order & from my experience they usually get them back in pretty quickly. Once they change from "back order" to "sold out", the price may well go up before they restock it again.
Hope that helps some people ;-)