Well yeah their keyboard technology certainly progressed, but stylistically, outside of the heavy emphasis on longer melodic lines in Oath Bound, it's all still the same. Whereas Beherit and others embraced entirely different approaches to create masterpieces like Engram. I guess I was only saying that most of the good bands from the '90s still releasing quality today had to heavily embrace some new elements, and it's refreshing that Summoning and a couple of others can still blow us away with the same general style, despite immensely better technology.
And that's not to say the old school is dead or something, just that no one really need give a shit about most of these old, still-active bands (ie Dead Congregation, Blaspherian, etc. make newer Incantation albums almost completely obsolete), but it's cool to see an old band that can still do it.