Six Flags Magic Mountain officials said a family coaster with no inversions and a 48-inch height requirement is “on track” for spring 2009.

Despite rampant speculation, the themed coaster will not be a rotating Tony Hawk’s Big Spin or an indoor Dark Knight, according to officials at the Valencia amusement park.

Six Flags will debut the $7.5-million Batman-themed Dark Knight coasters this spring at three U.S. locations: Great Adventure (New Jersey), Great America (Illinois) and New England (Massachusetts).

The theme park giant unveiled the $6.5-million skateboard-themed Tony Hawk coaster last year at two locations — St. Louis (Missouri) and Fiesta Texas (San Antonio) — and will add the ride this summer at Discovery Kingdom (Vallejo, California) and Over Texas (Arlington).

Magic Mountain has not added a new roller coaster since the flying Tatsu in 2006, opting for a $10-million upgrade to the troubled X coaster this year. Since 2006, the “extreme park” has removed the wooden Psyclone coaster, steel Flashback coaster and Freefall thrill ride.

In a bid to attract deep-pocketed families, Magic Mountain plans to add a Thomas Town kiddie land in 2008. An additional kiddie land, Wiggles World, won’t come to fruition before 2010, officials said.

A location for the new Magic Mountain coaster has been selected but not made public