Are future improvements in Amp/PreAmps slowing to a crawl?

I guess in terms of sound quality - gains will be marginal, but the means with which to deliver the results will keep developing - Class D and Class T amps being two such examples. My opinion is that with 'improved' technology logic will dictate amps will become:
1. Smaller and
2. More efficient
I think it is arguable that such amps may well have 'room correction' technology built in without the distortion affects of tone controls.
I thought that the likes of Tact/Lyngdorf was going to take over the world so to speak but oddly - as a company - they didn't - although digital amps appear to be the way to go for the majority of householders

hi @ roger_paul
I guess the loss of distortion has become a single minded pursuit for many amp maker - HAlcro; Neodio; LAvardin - do they not address 'velocity' already?
It is fascinating that single ended amps and valves - particularly OTL designs have such legions of fans and they major on the reproduction of a live sound.

hi @roger_paul 

I am utterly fascinated by what you have written. What you say is interesting insofar as comparatively I recall going to a talk by Nordost and Vertex cables when they explained that they looked at sonar technology in designing cables which has not been done before - likewise LAvardin make their designs to get rid of 'memory' in solid state circuits.
I look forward to how this develops and if you/colleagues will make such a design available for jo-public.