Gamers in eight European countries will now have to wait until 2014 before they're able to buy the next-gen console.
The UK and Ireland is safe from the cull, but gamers in Russia, the Netherlands, Norway, Belgium, Sweden, Finland and Switzerland will miss out for a few month months.
In a post on the Xbox Wire blog, Microsoft has apologised to gamers in those countries citing the ongoing work to 'localise' the Xbox One dashboard, secure content deals and add additional languages.
The post read: "While we wish we could launch Xbox One simultaneously in these markets, there are many factors that determine the timing of specific market launches. This includes work to localize the Xbox One dash, incorporate additional voice and languages, and build partnerships to bring apps and meaningful local content to each country."
The company has promised to launch 'as soon as possible' in those countries next year and by way of an apology will furnish all pre-order customers a free game with their 'Day One' systems when that time comes.
The 13 remaining launch markets; the US, UK, Canada, Australia, Austria, Brazil, France, Germany, Ireland, Italy, Mexico, Spain and New Zealand will still get the console in November.
Exactly when in November is another matter altogether, with Microsoft yet to confirm a concrete release date. That is expected to happen during the company's appearance at the Gamescom conference in Cologne, Germany, scheduled for August 20.