ED already made it pretty clear that the dimensions of the Pyra are going to be very close to those of the Pandora. Even the X dimension, which does not influence the pocketability cross-section, is going to stay the same or at most 1-2mm bigger. Perhaps the thickness of the base might slightly increase to the extent that it can be compensated with a thinner lid. The total width, height and depth of the Pyra will most likely all be very close to those of the Pandora.