Microsoft director of marketing Albert Penello has explained that the Xbox One delay was due to implementing voice support for various languages into the dashboard.
When a NeoGAF user postulated that Microsoft was discouraging importing because it wanted to make sure there were enough copies left for those in supported territories, Penello responded, "launch volumes are not really an issue. This was simply a software issue in terms of getting local language and voice support in the dash. It's pretty straightforward, but disappointing I know for people who are missing launch."
"Obviously, I support people waiting for the official supported launch in the affected markets for the best experience," he added.
He also noted that all games are "worldwide signed" i.e. region-free, unlike Xbox 360 titles, and "the console will work everywhere (keeping in mind power supplies)."
"You can use one of the 13 digital marketplaces corresponding to our launch markets, assuming you have a valid payment instrument for those countries. Lots of people in Europe specifically travel, move, and visit family," he continued before slyly adding "Now, of course, if you were using Pre-Paid cards..."