The Neo blockchain has announced the release of Neo X MainNet v0.5.1, a patch version that introduces several improvements and scheduled upgrades for the network. This latest version aims to enhance network functionality and ensure compatibility with upcoming forks.

One of the key features of this release is the addition of support for event subscriptions from dBFT (Delegated Byzantine Fault Tolerance), a consensus mechanism used by Neo. Additionally, the update improves PreBlock construction, specifically in handling Envelope transactions. These enhancements are designed to streamline transaction processing and improve overall network efficiency.

Following the successful deployment of the Cancun and Prague upgrades on TestNet, Neo X MainNet v0.5.1 schedules the same upgrades for MainNet. This ensures that the MainNet remains aligned with the latest developments and improvements tested on the TestNet.

Compatibility is a significant focus of this release. Neo X MainNet v0.5.1 is fully compatible with previous versions v0.4.2 and v0.5.0, meaning node resynchronization is not required. However, for MainNet nodes upgrading from v0.4.2, DB reinitialization is necessary due to the activation of the Cancun and Prague forks. TestNet nodes upgrading from v0.5.0 do not require any configuration changes.

Node operators on both TestNet and MainNet are encouraged to upgrade to v0.5.1 to maintain stability and compatibility with the upcoming forks. The Neo team emphasizes the importance of this upgrade to ensure continued network performance and reliability.

For more detailed information on the release, you can read the full announcement here.

Why This Matters: Impact, Industry Trends & Expert Insights

The Neo blockchain’s release of Neo X MainNet v0.5.1 introduces key upgrades aimed at enhancing network functionality and compatibility with upcoming forks.

A Stakin report highlights that recent blockchain network upgrades in November 2025 focus on scalability, interoperability, and efficiency enhancements. This aligns with Neo’s efforts to streamline transaction processing and improve overall network efficiency with its latest MainNet release.

A 99Bitcoins article notes that Neo’s recent upgrades, including the transition from Neo Legacy to Neo N3, mark a significant evolutionary step. This supports Neo’s aim to enhance technical capabilities and market positioning, reinforcing the impact of the Neo X MainNet v0.5.1 release.

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