Pull request #31120 by MrSimms implements JEP 401: Value Objects (Preview) in the openjdk/jdk repository. The PR was referenced on May 11, 2026, requiring an approved CSR before integration. A merge conflict with the target branch was initially flagged but later resolved.

Dan Smith and others contributed 6 commits on May 12, 2026, with reviews from dholmes, sspitsyn, fparain, cjplummer, mchevalier, and qamai. The changes include modifications to value object allocation and sampled object allocation handling.

The openjdk Bot managed workflow labels throughout the process: adding "csr" and "merge-conflict" initially, then "auto" for automatic integration once ready, followed by "ready," "rfr" (ready for review), and "sponsor" labels on July 30-31, 2026, indicating the PR progressed through review and sponsorship stages toward integration.