If you think about it, just about every new speaker today is just an updated, possibly improved or modified version of an existing design which often is a good thing & are noticeably better.
The last truly innovative designs may be Magneplanars, Apogee full range ribbons & before them the Heil Air Motion Transformer mid range / tweeter. Also DSP, subwoofers too. I love tube amps & horns when done well & enjoy both in my system w/ modern designs with much better comps& drivers than were available years ago.