This draft evolves JEP 429, Scoped Values (Incubator), that will be delivered in the upcoming release of JDK 20. This is preferred to thread-local variables, especially when using large numbers of virtual threads. This JEP, formerly known as Extent-Local Variables (Incubator) and under the auspices of Project Loom, proposes to enable sharing of immutable data within and across threads. JEP Draft 8303358, Scoped Values (Preview), was submitted by Andrew Haley and Andrew Dinn, both distinguished engineers at Red Hat. The review is expected to conclude on March 8, 2023.

JEP 438 proposes to enhance the Vector API to load and store vectors to and from a MemorySegment as defined by JEP 424, Foreign Function & Memory API (Preview). This JEP, under the auspices of Project Panama, incorporates enhancements in response to feedback from the previous four rounds of incubation: JEP 426, Vector API (Fourth Incubator), delivered in JDK 19 JEP 417, Vector API (Third Incubator), delivered in JDK 18 JEP 414, Vector API (Second Incubator), delivered in JDK 17 and JEP 338, Vector API (Incubator), delivered as an incubator module in JDK 16. JEP 438, Vector API (Fifth Incubator), was quickly promoted from Draft to Candidate to Proposed to Target status for JDK 20 this past week.

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