Deep Dive
1. Runtime 4000 Upgrade (1 December 2025)
Overview: This upgrade introduced staking migrations for validators, enhanced cross-chain messaging (XCM), and added support for Ethereum’s EIP-7623 to optimize transaction efficiency.
Developers streamlined staking logic to reduce validator downtime during rotations. XCM improvements allow smoother asset/data transfers between Moonriver and Polkadot/Kusama ecosystems. EIP-7623 adjusts gas calculations, potentially lowering fees for complex smart contracts.
What this means: This is bullish for MOVR because it strengthens network security, reduces cross-chain friction, and could attract more developers with Ethereum-compatible upgrades.
(Source)
2. Network Upgrade Coordination (6 January 2026)
Overview: Major exchanges like KuCoin and CoinEx suspended MOVR deposits/withdrawals to support the v0.49.2 runtime upgrade, ensuring node operators updated software securely.
The upgrade included critical bug fixes and compatibility patches for XCM channels. Validators had to upgrade clients by the deadline to avoid disruptions.
What this means: This is neutral for MOVR, reflecting routine maintenance for long-term stability. However, seamless coordination highlights institutional confidence in Moonriver’s governance.
(Source)
3. Capped Inflation Model (7 July 2025)
Overview: Runtime 3800 implemented a linear inflation model capping GLMR issuance at 60M annually once supply hits 1.2B, replacing dynamic inflation rates.
The update aimed to balance staking rewards with sustainable tokenomics. It also optimized runtime weights for faster block processing and expanded testnet bridging.
What this means: This is bullish for MOVR because predictable token supply reduces sell pressure risks while maintaining incentives for network validators.
(Source)
Conclusion
Moonriver’s codebase advances prioritize scalability, cross-chain interoperability, and economic sustainability. Recent upgrades suggest a focus on becoming a Polkadot/Kusama EVM hub. How might these improvements influence developer migration from Ethereum?