Polygon PoS is undergoing a major performance upgrade with the release of Heimdall v2 on the Amoy Testnet.
Heimdall v2 is a modernized and revamped consensus client that is at the heart of the Polygon PoS network. Similar to the previous version of Heimdall, it manages validators, selects block producers, facilitates spans, orchestrates the state sync mechanism between Ethereum and Polygon PoS and addresses other essential aspects of the system. It relies on a fork of Cosmos SDK based on v0.50.13 and a fork of CometBFT based on v0.38.17 for its consensus.
Polygon PoS Heimdall v.2 Migration: Released on Amoy Testnet.
Improvements
PIP-62: Migration from Heimdall v.1 to v.2 with genesis data imported
PIP-43: upgrading consensus layer with CometBFT to streamline transaction processing, improve state synchronization, and allow more…— Polygon Foundation (@0xPolygonFdn) June 27, 2025
Heimdall v.2 migration will allow faster finality (from 90 seconds to 5 seconds), improved consensus and cutting-edge security and performance.
The Polygon PoS Heimdall v.2 Release on Amoy Testnet marks the start of the long-anticipated Heimdall v1 to v2 migration. It includes improvements such as PIP-62, which migrates from Heimdall v.1 to v.2 with genesis data imported; PIP-43, which upgrades the consensus layer with CometBFT to streamline transaction processing, improve state synchronization and allow more efficient handling of external data; and PIP-44, which refactors to upgrade the dependency on Cosmos SDK.
The next phase will be to launch on mainnet within one to two weeks.
Polygon’s roadmap to 100,000 TPS
Earlier in June, Polygon unveiled its roadmap to 100,000 TPS. Polygon intends to go “gigagas” (100,000 TPS), substantially scalable to accelerate on-chain global financial transactions.
Polygon aims to achieve 1,000 TPS by July, minimize transaction finality to about five seconds and stabilize gas fees, among other goals, with the upgrade now live on testnet.
Polygon promises to scale to more than 5,000 TPS by October 2025, with AggLayer integration for seamless cross-chain liquidity, one-second block times and no re-org, resulting in instant finality and 5,000 TPS in a devnet environment.
The first milestone is expected to arrive in early July, with an upgrade that takes Polygon to 1000 TPS and 5s finality.
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