Rumor has it that Apple is prepping a 12.9" iPad for next year. Details on the device are scarce, but a story at DigiTimes suggests that it won't be the only super-sized slate to debut in 2015. Sony is reportedly prepping a 12.9-incher of its own for the first half of next year.
According to "sources from the related supply chain," the Sony tablet will have a 3840x2400 display with 11% more pixels than typical 4K panels. The resulting 16:10 aspect ratio is slightly more squarish than the 16:9 proportions usually favored by the Ultra HD camp. The pixel density works out to 351 PPI, which is substantially higher than for any other tablet on the market.
DigiTimes expects the jumbo Sony tablet to be a high-end offering, and it looks like Android will be the OS of choice. Although the article doesn't mention the Google OS specifically, it does name Qualcomm as the SoC supplier. Android would be a natural fit for an ARM-based chip.
There's no word on the SoC's specifications, but the tablet will reportedly be 8.6 mm thick, making it a little beefier than the 12.2" Samsung Galaxy TabPRO released earlier this year. That monster has a 2560x1600 resolution and a $549.99 price tag.