Apple's rumored 12.9-inch iPad likely won't make an appearance at next week's media event - or anytime soon, for that matter. Production on the planned larger-screen iPad has been pushed back as suppliers continue to struggle to keep up with demand for the iPhone 6 and iPhone 6 Plus according to sources familiar with the matter as reported by The Wall Street Journal.

The original plan was to send the larger iPad into mass production in December. Output of the 5.5-inch iPhone 6 Plus remains unsatisfactory, however, according to one supplier. As such, it would be difficult for display makers to split resources and spend a few months to ramp up production for the bigger iPad.

Suppliers aren't the only ones having a hard time keeping up with demand. The publication notes that Foxconn, Apple's major iPhone and iPad assembler, is struggling to hire enough factory workers to build the two new iPhones. At its largest production site, more than 200,000 workers are tasked with building the new iPhones.

Asian suppliers told the Journal that the bigger iPad would likely have a 12.9-inch LCD with a resolution similar to the current 9.7-inch iPad Air.

Just yesterday, Apple issued invites for a media gathering on October 16 where most expect the Cupertino-based company to unveil the next generation iPad Air and perhaps a new iPad mini along with new Macs.