Via Lionhead's blog, the U.K.-based studio said the game has sold 2.6 million copies since the game's release in October last year. The game sold over a million units more since annoucing the 1.5 million sales milestone in late November.
"Fable II is still doing really well," wrote Lionhead community manager Sam Van Tilburgh. "...It's quickly becoming one of the best selling RPGs of Xbox 360."
While rumors have circulated the Internet about development of Fable III, Van Tillburgh pointed out that Liohead is not yet done with Fable II. He confirmed that there will be more downloadable content for the game in the future.
"The team here in Guildford is working on some new content right now! More information will be shared in the coming weeks," he said.
An archived news release on Lionhead's official website from March 2005 said the original Fable for Xbox had sold 1.4 million copies in about three months time.