Seriously people, by now the 001A construction almost reach the flight deck level, and if there's gonna be catapult of whatever designs, we should see the groove space for it by now - and there's none.
Besides, the land facility only recently reach the final phase of construction. Thus, no catapult would make it in time for the 001A design deadline and certainly won't be in time to redo the design to put one on now - as something like that can translate into 12-months delay at the very least, even if you consider in Chinese "workaholic tendency" (y'know, the kind of thing the Chinese "party line" love to blah blah blah over).
So give it up, people, no catapult on 001A.