This RFC adds generic type syntax to PHP. Classes, interfaces, traits, functions, methods, closures, and arrow functions can declare type parameters; those parameters carry bounds, defaults, and variance markers; type arguments may be supplied at use sites and at call sites via turbofish.
A new syntax for declaring the “set” operation visibility of an object property
Chain method on newly created objects without parentheses
Generics are one of the most requested feature since PHP met the OOP paradigm and for me, this will step to set the boundaries to its OOP complete adherence.
We will be able to describe complex classes or dynamically typed ones, increase readability and move type hinting away from comments.