Microsoft likes what they saw during the holidays because they're offering another "special" price for the Xbox One starting tomorrow. Beginning January 16, you can pick up the Xbox One for $349 (USD). This follows roughly a week of the console being at the "normal" retail price of $399 following the holiday sales.
“Building off a record-setting holiday, we are excited to announce a new promotion in which fans in the U.S. can buy an Xbox One at a special price of $349, starting tomorrow, January 16, from their preferred retailer,” said Mike Nichols, Corporate Vice President of Marketing for Xbox. “We are thankful for all the excitement for Xbox One this holiday and proud to offer more fans the amazing games lineup, Xbox Live gaming community, and continual innovation that Xbox One fans have come to enjoy.”

At this point, they might as well just say it's the new retail price for the console, because a three+ month long "special" deal isn't really fooling anyone.

(via Xbox)