Air iPad and the new iPad Mini comes in variants with respectively 16, 32, 64 and 128 GB. The old only in 16 GB versions.
Apple introduced yesterday their new iPad-model, which according to them is so different that it should have an entirely new name. While the iPad Mini-the name is made up, however, is the new model with the Retina display.
The new iPad Air comes in versions with 16, 32, 64 and 128 GB of memory.
However, it is not only the iPad Air, which can be acquired in a 128 GB version also the new iPad Mini with Retina display comes in a 128 GB version, as well as versions with 16, 32 and 64 GB.
On the other hand, the old models of iPad 2 iPad and iPad Mini, only be available in 16 GB versions.