At the risk of predicting future fashion trends, which is rarely a good idea, I'll venture that objects are going to continue to be trendy for at least a few more decades.
This article is four years old, but since the prediction spans decades, I think it's fair to pick on it a little.
The OOP trend seems to be waning. The languages people are getting excited about lately seem to be de-emphasizing OOP and providing other mechanisms for some of the useful attributes of OOP.
Haskell and Clojure don't have OOP as most people know them, but Clojure's multimethods and Haskell's typeclasses replace OO polymorphism to a large degree. Scala and F# have OOP, but using it is optional.
Ten years ago, a new language intended for practical work and lacking OO wouldn't be taken seriously. That has changed, and the change seems to be accelerating.