The bases for the individual sets are different from the ones released in Japan, to my knowledge, but the Pokemon figures look the same. They are also selling different sets; for example, I have the "garden house" set, but mine came with Fennekin and Swirlix rather than Pikachu and Vaporeon as shown.
I would be interested to see if they release any new Pokemon. (I'd love a PitaPoke Mew!)
I did not see another post announcing this, but if I was mistaken, please let me know and I will delete this one.