Editorial: Describe changes in ES2024 (#3282)

Author: bakkot

spec.html

@@ -99,6 +99,7 @@ <h1>Introduction</h1>
   <p>ECMAScript 2021, the 12<sup>th</sup> edition, introduced the `replaceAll` method for Strings; `Promise.any`, a Promise combinator that short-circuits when an input value is fulfilled; `AggregateError`, a new Error type to represent multiple errors at once; logical assignment operators (`??=`, `&&=`, `||=`); `WeakRef`, for referring to a target object without preserving it from garbage collection, and `FinalizationRegistry`, to manage registration and unregistration of cleanup operations performed when target objects are garbage collected; separators for numeric literals (`1_000`); and `Array.prototype.sort` was made more precise, reducing the amount of cases that result in an implementation-defined sort order.</p>
   <p>ECMAScript 2022, the 13<sup>th</sup> edition, introduced top-level `await`, allowing the keyword to be used at the top level of modules; new class elements: public and private instance fields, public and private static fields, private instance methods and accessors, and private static methods and accessors; static blocks inside classes, to perform per-class evaluation initialization; the `#x in obj` syntax, to test for presence of private fields on objects; regular expression match indices via the `/d` flag, which provides start and end indices for matched substrings; the `cause` property on `Error` objects, which can be used to record a causation chain in errors; the `at` method for Strings, Arrays, and TypedArrays, which allows relative indexing; and `Object.hasOwn`, a convenient alternative to `Object.prototype.hasOwnProperty`.</p>
   <p>ECMAScript 2023, the 14<sup>th</sup> edition, introduced the `toSorted`, `toReversed`, `with`, `findLast`, and `findLastIndex` methods on `Array.prototype` and `TypedArray.prototype`, as well as the `toSpliced` method on `Array.prototype`; added support for `#!` comments at the beginning of files to better facilitate executable ECMAScript files; and allowed the use of most Symbols as keys in weak collections.</p>
+  <p>ECMAScript 2024, the 15<sup>th</sup> edition, added facilities for resizing and transferring ArrayBuffers and SharedArrayBuffers; added a new RegExp `/v` flag for creating RegExps with more advanced features for working with sets of strings; and introduced the `Promise.withResolvers` convenience method for constructing Promises, the `Object.groupBy` and `Map.groupBy` methods for aggregating data, the `Atomics.waitAsync` method for asynchronously waiting for a change to shared memory, and the `String.prototype.isWellFormed` and `String.prototype.toWellFormed` methods for checking and ensuring that strings contain only well-formed Unicode.</p>
   <p>Dozens of individuals representing many organizations have made very significant contributions within Ecma TC39 to the development of this edition and to the prior editions. In addition, a vibrant community has emerged supporting TC39's ECMAScript efforts. This community has reviewed numerous drafts, filed thousands of bug reports, performed implementation experiments, contributed test suites, and educated the world-wide developer community about ECMAScript. Unfortunately, it is impossible to identify and acknowledge every person and organization who has contributed to this effort.</p>
   <p>
     Allen Wirfs-Brock<br>
@@ -114,15 +115,15 @@ <h1>Introduction</h1>
   </p>
   <p>
     Shu-yu Guo<br>
-    ECMA-262, Project Editor, 12<sup>th</sup> through 14<sup>th</sup> Editions
+    ECMA-262, Project Editor, 12<sup>th</sup> through 15<sup>th</sup> Editions
   </p>
   <p>
     Michael Ficarra<br>
-    ECMA-262, Project Editor, 12<sup>th</sup> through 14<sup>th</sup> Editions
+    ECMA-262, Project Editor, 12<sup>th</sup> through 15<sup>th</sup> Editions
   </p>
   <p>
     Kevin Gibbons<br>
-    ECMA-262, Project Editor, 12<sup>th</sup> through 14<sup>th</sup> Editions
+    ECMA-262, Project Editor, 12<sup>th</sup> through 15<sup>th</sup> Editions
   </p>
 </emu-intro>