Must admit that I agree with Rex on this, but I do think that there is one line in the new set that is pretty much a carbon copy of a previous set.
line and klink (No. 599-601) evo line.
I know they do not look similar but, Base Stats are near Identical main difference is a switch of emphasis on Special Attacks with the Magnemite family to Physical with Klink. Klinks family relies heavily on Steel and Electric type attacks, just without the STAB on Electric. So if anything, Klink is not only a copy but also a worse option than Magnemite and co.
Just my two cents though. I have no doubt everyone will disagree.