Thank you for supporting the largest launch in Xbox history. In 24 hrs more new consoles sold, in more countries, than ever before. We’re working with retail to resupply as quickly as possible. You continue to show us the connective power of play is more important than ever.— Phil Spencer (@XboxP3) November 12, 2020
For comparison, Xbox One was the previous record holder for Xbox, with "over 1m consoles sold in the first 24 hours" across Xbox One's 13 launch countries (VGC estimated 1.1m back in 2013).
Edit- Some new stats:
- Launch was across 40 countries, compared to 13 for Xbox One
- More new owners (people who have never owned an Xbox before) than any game previous Xbox launch
- Series S lead to Xbox Series having a higher percentage of new owners (people who have never owned an Xbox before) than Xbox 360 or Xbox One had on launch
- More games played, 3,594 in total, spanning four generations, setting a record for the most games ever played during an Xbox console launch
- 70 percent of Series X|S consoles are attached to new or existing Xbox Game Pass subscriptions