The java-tron team has released GreatVoyage v4.8.2.2, codenamed Parmenides, and marked it as a mandatory upgrade. It is a patch release with a relatively small change set, but the mandatory label makes it operationally relevant for node operators planning their current maintenance cycle.
The first change refines validation for smart-contract deployment transactions. The maintainers say the adjustment is intended to improve consistency and reliability when those transactions are processed. The release also optimizes edge-case handling for Stake 2.0 and the SELFDESTRUCT instruction, with the stated goal of improving processing efficiency.
A third change targets jump-table initialization and reuse during contract execution. The release notes describe this as an execution-efficiency improvement rather than a new user-facing feature or a change to network economics. In practical terms, v4.8.2.2 is primarily an operational and corrective release.
The project also provides signatures for the available JAR files and documents a GPG verification process for checking downloaded artifacts. JAR files without a platform-specific suffix remain the standard x86_64 builds, consistent with previous releases. Operators should use the official release artifacts and signatures because this is the version the maintainers have explicitly designated as mandatory.