[GreenScar]

I would put this in the rumor category.

"Ice Age 3: Dawn of the Dinosaurs" has yet to appear in theaters, and according to an AICN source, 20th Century Fox has already been hard at work on a fourth installment in the franchise.

The new film, tentatively titled "Ice Age: Th4w," will step away from the prehistoric setting. It will see Manny, Sid, Diego, Ellie and Scrat frozen solid and accidentally thawed in a museum during present day.

The first "Ice Age" movie earned $383 million in worldwide ticket sales, while the sequel brought in $652 million. It's no wonder that Fox would already be planning future installments.