The site expects Apple and Samsung to top tablet vendors in 2014 with shipments of 80-90 million and 60-70 million units, respectively.
Samsung's recent launch of its 12.2-inch model is expected to propel Apple to accelerate development of large-size iPads. Market sources indicated that Apple is likely to release a 12.9-inch model by the end of the third quarter at the earliest.
Samsung is allegedly working to launch more Galaxy Lite models with prices going as low as $129. Apple has reportedly asked production partners and component suppliers to develop new 7.9-inch and 9.7-inch tablets.
The same site previously reported that Apple would launch a larger iPad in October 2014, to target North America's educational market. It's said that Quanta Computer will be tapped to produce the tablet.