Well size wise the harddrives have gone up quite a bit, but the other...
ATA100 is the standard still, but ATA133 is beoming more and more used, too bad mostly Maxtor makes use of it :\
but then you have the SATA which is quite a bit faster

But who knows.....in a few years we might see some changes, atleast if the development of nanotechnology goes as well as I hope