The current miniaturization process is certainly reaching its potential within the next 20-25 years or so but advancements in other areas have already opened up new avenues which have been the subject of study and development for almost a decade now.
Even if everything we are looking at now doesn't pan out the LHC will soon be completed and we will continue to probe ever deeper in our attempts to find the fundamental "particle". I put quotes around particle because a point-particle quantum framework is looking less and less likely these days.
In short, one way or another technology will continue to advance, but that doesn't mean it will be at the rate it has been for the last 40 years. It could very well be slower and it might even be faster..although that seems significantly less likely.








