When compared to a full-size 9.7” iPad Air with the alleged upcoming iPad Pro cases, it does seem to point to the possibility of having a similar level of thickness with the existing generation of the iPad Air 2. While there has been no unanimous agreement as to whether the larger sized iPad will come with a 12.5” or 12.9” display, either way, it is going to be huge to say the least. Carrying it with one hand for long periods of time might be something that one should get used to, I guess.
Of course, do take what you have seen and read with a pinch of salt, and until Apple steps forward with an official statement concerning the actual existence of such a device, we will just keep our fingers crossed.