Why do you think that?

This article mentions that a secondary objective for the launch is to recover the first stage by landing in the Pacific.

http://www.spaceflightnow.com/falcon9/006/130928preview/

It also seems that SpaceX's ships for recovering the Dragon spacecraft are heading for the recovery zone of the F9 1.1 first stage. http://www.reddit.com/r/spacex/comments/1nd0qc/american_isla...

I was replying to a now deleted comment which suggested that SpaceX had attempted and failed at first stage recovery in the past. It seemed like an odd thing to say, as SpaceX has been fairly transparent about failures in the past (and as this is the first launch of Falcon9 v1.1, they couldn't have attempted powered descent with earlier flights anyway).