] The surprise announcement came during a Wednesday
] afternoon taping of NBC's "The Tonight Show" with Jay
] Leno which was scheduled to air Wednesday night. Prior to
] the taping, it had been widely speculated that
] Schwarzenegger, 56, would announce he would not run.

Well I guess this speaks for itself. Arnold is going to enter the race after all.

CNN.com - Schwarzenegger announces bid for governor - Aug. 7, 2003