September 26, 2026

Official Confirmation of V27 Mainnet Upgrade Completion, Simultaneously Announcing V28: Node Deadline 10/13, Mainnet Target 10/16

@PiCoreTeam posted on X early this morning, officially confirming that Protocol 27 has successfully completed its upgrade on the Mainnet, and simultaneously announced that the Testnet has been upgraded to Protocol 28. Official Announcement Details The official statement explains that following the successful completion of the Protocol 27 upgrade on the Mainnet, the Testnet has been upgraded to Protocol 28. Protocol 28 improves how the network handles transaction data latency and allows developers to upgrade an entire set of smart contracts at once, enabling safer changes to stored data during application evolution. The official team also announced the timeline: All node operators must upgrade their nodes to Protocol 28 by October 13, 2026, in preparation for the Mainnet Protocol 28 upgrade on October 16. This Confirms the Complete V27 Timeline OrbitWatch previously observed via the Horizon API that the Mainnet had switched to v27 on 9/22. This official announcement serves as a post-facto confirmation, with the timing being consistent. V28 Now Has a Clear Timeline This also resolves a previous uncertainty: the official team had referred to V27 as the "final planned upgrade," but the node upgrade path later showed a step from 27.1 → 28.x, which at the time had no deadline or technical details, only marked as TBD. This official announcement now provides the complete information: Compared to previous instances: If V28 proceeds smoothly according to the official timeline, the interval between the node deadline and the Mainnet switch will be just 3 days, returning to the faster pace seen with V22-V24 and V26. OrbitWatch's Ongoing Tracking We will continue to monitor for further technical details regarding V28 on the Testnet, as well as the actual status of nodes and the Mainnet around the October 13 and October 16 dates. Further Reading Confirmation: Pi Network Mainnet Protocol Officially Switched to v27 Nodes Upgraded to v27, but Testnet 2 and Mainnet Still Awaiting Pi Network Protocol Upgrade Mechanism: From Node Deadline to Mainnet Switch Data sources: @PiCoreTeam official X account (post on 2026/9/25), Pi Network Horizon API (api.mainnet.minepi.com). All analysis does not constitute investment advice. OrbitWatch is an independent Pi Network ecosystem observer and is not affiliated with the official Pi Network team.

• •PiCoreTeam officially confirmed the successful V27 Mainnet upgrade and announced the Testnet's upgrade to Protocol 28.
• •Protocol 28 enhances transaction data latency and enables developers to upgrade smart contracts more securely in batches.