The new carrier is thought to be displace 60,000 to 70,000 tons. That's far short of the new US Gerald Ford class's 100,000 tons. The Type 001a will probably carry something in the area of 48 aircraft, including 36 J-15 multi-role carrier-based fighters and another dozen Z-18 or Z-9 helicopters. The new ship will probably be launched from drydock sometime early next year and will float pierside for the rest of the refitting process. That will take at least a few years, and ship trials will take another year or two. It will not be fully operational until 2020 or later.
The J-15 is structurally based on the Russian Su-33, the indigenous fighter features Chinese technologies as well as avionics from the J-11B program
SOURCES- Wikipedia, NDTV, Popular Mechanics, Janes