Azerth on 15 August 2013
http://www.eurogamer.net/articles/2013-08-15-microsoft-explains-how-xbox-one-importing-could-work
"When the console launches this November, we will support Xbox One in 13 markets. Xbox One may be used in all countries, including the non-launched markets. In addition, Xbox One games are not region locked. Any Xbox One game purchased at retail can be used in any country on any Xbox One," said Microsoft in a statement.
http://www.ign.com/articles/2013/08/14/xbox-one-season-pass-guarantee-lets-dlc-span-generations
so somewhat workaround the whole marketplace thing is to buy the season pass from the 360 which will then work on ur x1
