the 8P DIS is very different to the other PQ35 platform cars' DIS (in the same way 8Ps have RNS-E whereas the others have RNS-510 or MFD2). FIS+ isn't available for the 8P for similar reasons - it's a totally different system.
the white 8P DIS can also be retrofitted to older 8P cars. i know of at least one person who's put it on an '04 car. i don't know why you would tbh - yes it' has more features but i love the way my 8P cockpit looks like the bridge of a battleship at night