"We're contacting you about your order of Xbox Series X to let you know in advance that you may not receive this item on the day it is released due to high demand," Microsoft's email said. "We are making every effort with the supplier to procure more inventory. We will provide additional updates once more information becomes available."
Sony's new -- the is priced from $400 for a launch date of Nov. 12..
Editors' note: The title and content of this article was corrected to reflect that it was Amazon, not Microsoft which sent the warning email about Xbox preorders.