Java
Java was never the quickest language regarding new features compared to newer languages, but IMHO, this is one of the reasons why most of the enterprise world still depends on it and will in the future.
Thanks to the module system of Java 9 and the removal of JavaFX from Java 11, we got some problems running JavaFX apps without older versions of Java.
No matter what your daily driver is, most of us also have to write some shell scripts to automate stuff. Usually, bash script, Python, Perl, etc. is used. But what if we could use a compiled language instead?
A new addition to the Java repertoire are default methods for interfaces: Non-abstract methods directly in an interface.
Streams are one of my most used features of Java 8, especially in combination with lambdas. They make code more concise, and we all love shorter, more readable code. But a lot can go wrong along the way.