"JEP 529, Vector API (Eleventh Incubator), announced here, proposes an eleventh incubation, with no substantial implementation changes since JDK 25, after ten rounds of incubation delivered in JDK 16 through JDK 25. This feature introduces an API to " express vector computations that reliably compile at runtime to optimal vector instructions on supported CPU architectures, thus achieving performance superior to equivalent scalar computations.""
"JEP 516, Ahead-of-Time Object Caching with Any GC, announced here, proposes to enhance JEP 483, Ahead-of-Time Class Loading & Linking, delivered in JDK 24, for improved startup and warmup time such that it can be used with any garbage collector, including the low-latency Z Garbage Collector (ZGC). JEP 500, Prepare to Make Final Mean Final, announced here, proposes to prepare the Java ecosystem that will not allow mutation of fields declared as with deep reflection, generally practiced using the setAccessible() method defined in the class."
Three JEPs were targeted for JDK 26: JEP 529 (Vector API, Eleventh Incubator) continues incubation to enable vector computations to compile at runtime to optimal CPU vector instructions until Project Valhalla previews allow promotion. JEP 516 (Ahead-of-Time Object Caching with Any GC) enhances JEP 483 from JDK 24 to enable ahead-of-time class loading and object caching usable with any garbage collector, including the low-latency ZGC, to improve startup and warmup. JEP 500 (Prepare to Make Final Mean Final) prepares the ecosystem to prevent mutation of declared final fields via deep reflection such as setAccessible(). Three additional JEPs were proposed to target, including JEP 530 as a fourth preview for primitive types in patterns, instanceof, and switch.
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