The rumors about Apple’s supposed 12 inch tablet are growing and it appears that Apple has settled on two of the 5 12.9 inch panels it was testing. Insiders are saying that they come with 2K and 4K resolutions and the source of the info is pretty solid here.

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There’s a 12 to 13 incher coming in March next year apparently and the prototype is already in advanced testing phases at Foxconn. New info shows that the release date may actually be pushed to April, or even later, since Apple is focused on production of test batches for 2K resolution panels. The 2K models may only be a prototype of the final devices, that will have 4K screens.

Many have described the 12 inch iPad as a replacement for the MacBooks in the future, especially if it has a powerful CPU and all the features that a MacBook can offer. With a proper keyboard accessory, Apple would pretty much be in the game of convertible ultrabooks or close to it.