Is there any sort of plan in action here? Yes, I know he's Mr. Olympia, but let's face it, Jay made all his intial gains with genetics, drugs and typical horseshit pump-style lifting. He's still training like he did in the beginning ... and it no longer cuts the mustard. That is, if he's looking to add muscle, thickness, etc.
Watch the video and tell me he's not just running through the motions.