The original release window given was this summer, but it now looks like the specific release date may have leaked ahead of an official announcement. On IGN, they say that it is not likely to be just a random placeholder date seeing as summer starts on the 21st of June.
Though, as per Amazon's special promotion on the No Man's Sky Xbox One version, if release lands before June 29, 2018, buyers pay the lowest price. Secondly, June 29 happens to fall on a Friday, and video games typically release on Tuesdays or Fridays. PC and PlayStation 4 will receive the next update for No Man's Sky too. While it's unlikely, it's still possible that this listing is an error on Amazon Italy's part.
Not long ago, it was revealed that No Man's Sky would be coming to Xbox One this year.
When No Man's Sky releases on Xbox One, it will be enhanced with HDR support and 4K resolution on Xbox One X. In addition it is also releasing with the massive NEXT update, being labelled as the game's biggest update yet. If the NEXT update brings No Man's Sky a little closer to the experience that was promised, it could help reverse the game's misfortunes.
A listing of the Xbox One version of No Man's Sky recently appeared on Amazon Italy, which states that the game will be released on June 29.