Class static blocks in JavaScript, currently a stage 2 proposal, introduce additional static initializations during class definition evaluations, enhancing the language's object-oriented programming capabilities. Unlike static fields, static blocks allow for new use cases, such as evaluating statements during class initialization and setting multiple fields from a single value, which are not possible with static fields alone. While JavaScript uses prototypal inheritance, recent features like static methods and extends have introduced elements similar to classical inheritance, providing syntactic sugar for more traditional object-oriented patterns. Static blocks create a new variable environment within the class scope, allowing access to private states and supporting information sharing between classes and functions. This evolution in JavaScript appeals to a broader range of developers, especially those deterred by prototypal inheritance, though it's crucial to remember that these features remain experimental and part of an ongoing proposal process.