Which quite clearly means he has not decided to run yet. If he had, he would not be waiting till "later this summer".
Beyond simply the August 13 event in Ames, Iowa, a big question for Mr. Perry is whether a compressed schedule would allow him to attract enough money and primary voters to win the nomination. Perry campaign adviser David Carney says that question still hasn't been answered, and even a positive verdict doesn't necessarily mean the Texan would enter the race. "Then he's got to saddle up and do a gut check" to determine if he's ready for the rigors of a presidential run, says Mr. Carney.
Which again makes it pretty obvious Perry has not yet decided to run. If he were actually sure he was running and so worried about the compressed schedule, Perry would jump in the race pretty much immediately.
While I do suspect Perry is thinking of running, this article is just more speculation. My guess is Perry is still trying to determine what Palin is going to do, and Palin probably just hasn't decided yet.
It is being reported that Perry already has crews on the ground in key states and he will enter in August.