"Following stage separation, the first stage of Falcon 9 will attempt an experimental landing on the “Of Course I Still Love You” droneship. As with other GTO missions, the first-stage will be subject to extreme velocities and re-entry heating, making a successful landing difficult."
Mission Press Kit : http://www.spacex.com/sites/spacex/files/spacex_eutelsat_abs...
EDIT: Sounds like they lost the first stage, still not very clear on the details.
EDIT2: Confirmed loss of first stage by Elon Musk.
"Ascent phase & satellites look good, but booster rocket had a RUD on droneship"