After having thought a moment, I think I surely bought the latest generation apple is currently selling. Why would Amazon sell an old version ? Because, when you type on amazon.co.uk "ipod classic", you directly find the one I bought, not the one which is said to be the 7th generation.
Sorry, I'm french, and there are some words I don't know yet... What is a "faceplate" ? ^^ (and I hope I don't make too many mistakes ^^)
But all in all, there are minor differences, not major differences, aren't there ?