The catapult version of the J-15 has been rumored for certain period of time, but this is probably the first time that the facility's image at ground level leaked to the general community.
And what about their version of the "bubble" shown here? Something tells me the hatch that got fenced up is the remote station to serve the same purpose as found on USN carriers.
We've had pictures of the J-15T/A/B/whatever we want to call it for a while... so I wouldnt' say it has only been "rumoured".
This is however the first time we've had a ground level photo of it attached to a catapult at Huangdicun.