yes indeed there are some changes, that's more evident in the W5000/W6000 manuals, check them. Here some differences :
SOAK - On the W844 and the W3264 I find very confortable to have the soak and the main wash done with the same water. Latest machines make a soak only in the prewash bath (they call it timed prewash). It's a pain, one can use only powders. Ok, I know the liquid detergent dispenser is available ... I have it on the W780, but after prewash, the amount of water filled in the main wash is not enough to dissolve it totally. Go figure this is a 25 y.o. machine, latest ones would rinse with detergent ...
INTENSIVE PLUS - it's an "old school" cotton cycle, default prewash not deselectable, medium level wash bath and longer wash time ( 2h 47 min @ 60°C vs 2h 10min cottons 60)
EXPRESS - "older" machines don't allow the "short" option on "mini/express" . New ones have it default selected and deselectable to have the old, longer express (30 min vs 20 mins)
MINIMUM IRON - you're right. the latest wash pattern seems to be no more the same as cottons