I've given some talks making the case that what we are doing with Java streams, LINQ, Rx, Ruby Enumerable, point-free style in Haskell, etc is prepping us for a

I've given some talks making the case that what we are doing with Java streams, LINQ, Rx, Ruby Enumerable, point-free style in Haskell, etc is prepping us for array languages. They are all emphasize transformation pipelines. What the array languages bring to the game is shape polymorphism and many more operators. I suspect we'll see both move into more mainstream languages over the next 5 years or so.