Activision have put out a press release to this effect:
Call of Duty(R): Modern Warfare(R) 3 Sets All-Time Record for the Biggest Entertainment Launch with More than $400 Million in North America and United Kingdom Sales Alone
More Than 6.5 Million Units Sold in U.S. and U.K. in 24 Hours
SANTA MONICA, Calif., Nov. 11, 2011 /PRNewswire/ — Shattering its own day-one sales records, Activision Publishing, Inc., a wholly owned subsidiary of Activision Blizzard (Nasdaq: ATVI), announced that its highly-anticipated Call of Duty®: Modern Warfare® 3 has become the biggest entertainment launch ever with an estimated sell-through of more than $400 million and more than 6.5 million units in North America and the United Kingdom alone in the first 24 hours of its release, according to Charttrack and retail customer sell-through information.This marks the third consecutive year that the Call of Duty franchise has set day one launch records across all forms of entertainment, something no other entertainment franchise in any medium has ever accomplished. Last year, in North America and the United Kingdom, Activision’s Call of Duty: Black Ops™ had estimated day-one sell-through of $360 million and in 2009, Call of Duty: Modern Warfare 2, set day-one records with estimated sell through of $310 million, according to Charttrack and retail customer sell-through information.