Update truffle changelog.

Author: woess

truffle/CHANGELOG.md

@@ -17,6 +17,11 @@ This changelog summarizes major changes between Truffle versions relevant to lan
 * GR-64533 By default every specialization is now included for {@link GenerateUncached}, except specializations that require a {@link Specialization#limit() limit} and are replaced, those are excluded by default. By setting `@Specialization(excludeForUncached=..)` explicitly the default behavior can be overridden, e.g. to include or exclude a specialization for uncached. Specializations which are no longer compatible with uncached will produce a warning instead of an error for compatibility reasons until all languages are migrated. It is therefore expected that language implementations may see new warnings with this version.
 * GR-64124 Added `BytecodeOSRNode.pollOSRBackEdge(BytecodeOSRNode, int)` that supports batch polling for bytecode OSR. Using this method avoids checking for bytecode OSR on every loop backedge.
 * GR-64124 Deprecated  `BytecodeOSRNode.pollOSRBackEdge(BytecodeOSRNode)`. Use `BytecodeOSRNode.pollOSRBackEdge(BytecodeOSRNode, int)` instead. Please note that the old method did call `TruffleSafepoint.poll(Node)`, but the the new method does not. Please double check that your bytecode interpreter polls Truffle safepoints at loop back-edges.
+* GR-64086 Added extended Dynamic Object Model Layout that adds:
+    * A shape obsolescence strategy enabling optimistic type speculation for primitive property values with gradual migration to more general shapes on speculation failure (moving primitive slots to reference slots), eventually converging on a general enough shape tree. Reduces shape polymorphism by obsoleting and merging too specific shapes in favor of more general shapes.
+    * Automatic reference type tracking based on assumptions, eliminating redundant type checks.
+    * Automatic single-assignment tracking based on assumptions allowing languages to assume that a property is effectively final (i.e. stays unchanged after the initial assignment) as well as constant-fold values of a constant receiver with a known shape.
+    * You can still disable the new layout and switch back to the previous implementation using the system property: `-Dtruffle.object.LayoutFactory=com.oracle.truffle.api.object.CoreLayoutFactory`.
 
 ## Version 24.2.0
 * GR-60636 Truffle now stops compiling when the code cache fills up on HotSpot. A warning is printed when that happens.