According to a couple of short tweets from Microsoft's Larry Hryb, Microsoft ran out of Xbox 360's in December. That shortage may extend to January and February, according to Hryb, who added that the Xbox 360 will see amazing year-over-year growth.
"NPD tomorrow. I found out we ran out of consoles at end of the month so don't expect to win Dec," said Hryb over Twitter.
"Jan/Feb supply is tight as well. Likely amazing YOY growth numbers for Xbox," he added.
Analyst firm Wedbush Morgan predicts that Microsoft sold 2.5 million Xbox 360 units during December, up an incredible 92 percent year-over-year, but did not beat Nintendo, who managed to move 2.6 million Wii's. Sony moved 1.2 million PlayStation 3 units during December, according to Wedbush Morgan.
NPD numbers for December are to be released later today.