While there is a low likelihood SpaceX will be able to recover the first stage of the CRS-3 Falcon 9 from the water, the returning booster will attempt to deploy its landing legs during its descent.

 SpaceX CRS-3:

The NET (No Earlier Than) March 16 launch of the Falcon 9 v1.1 has a primary objective of lofting the next Dragon spacecraft (CRS-3/SpX-3) into orbit for her journey to the International Space Station (ISS).

Preparations are continuing with the processing and integration of the spacecraft and launch vehicle at SpaceX’s SLC-40 facility located at Cape Canaveral in Florida.