Apple has reportedly been working on its new iPad with a larger 12.9-inch display and iWatch for quite some time, but latest reports claim that the devices will not be launched anytime soon due to engineering challenges.

Several eyes are set on Apple's next innovations, the 12.9-inch iPad and its most-awaited wearable tech, the iWatch. Since Samsung launched its Galaxy Gear smartwatch, Apple has been on its toes to stay at par with its rival. Earlier reports claimed that the larger iPad will make its grand debut early next year and the iWatch will be launched during the first quarter of 2014. But the latest reports citing supply chain sources paint a different picture.

According to Digitimes' supply chain sources; Apple is placing orders for its larger iPad model with the supplier, Quanta Computer. Apple's new iPad will target education and enterprise markets.

The sources claim that initially, the supply will be limited as Qunata may face some engineering and design challenges in manufacturing the device.

As for the so-called iWatch, Apple was readying its wearable tech to launch during the first quarter of 2014 but Monday's report from Digitimes claims that the launch date has been pushed to the second quarter. Apple has reportedly been hit by low production resulting in the delay.

Apple has already tied its orders for both the bigger iPad and iWatch with Quanta Computer, but the sources claim the iWatch orders will be shared with Inventec and Foxconn, too.

Apple currently hosts iPad devices with maximum 9.8-inches screen size. The company launched its most recent iPad Air with a 9.8-inche display. However, the company also offers smaller tablets like the 7.9-inch iPad Mini with retina display and the same model without retina display. The 12.9-inch iPad will compete against its biggest rival Samsung and other companies like LG and Nokia that offer large screen tablets.