I expect to have a visual dataflow programming environment similar to node-red, Yahoo! Pipes etc. that is touchscreen-friendly, has plenty of community-maintained building blocks and converts to a variety of low-level languages for easy deployment to many platforms. Hopefully, we'll get rid of clunky IDEs/text editors with lots of boilerplate, whole file hierarchies to maintain and all that other ancient stuff invented for 1960's teletypes.
I think flow based programming in general has a lot of untapped utility. I have had good success putting complex data processing workflows in to python with luigi. Tensorflow and ROS are also dataflow(ish) systems that are gaining popularity.
