Hedera (HBAR) Calendar: Release Schedule, Listings, Hard Fork, Halving
Consensus Node v.0.68
Hedera will add Dynamic Address Book support (HIP-1299) with the upcoming Consensus Node v.0.68 update in December 2025.
CSM Price Change
Hedera has announced that starting January 2026, the fixed USD fee for the ConsensusSubmitMessage service will increase from $0.0001 to $0.0008.
Mirror Node v.0.148.0
Hedera has published details of its upcoming network upgrades scheduled for 2026.
Testnet Upgrade
Hedera is scheduled to upgrade its public testnet to version 0.69 on December 23rd at 18:00 UTC.
SafePal Integration
Hedera announced that its EVM-compatible network is now supported within the SafePal wallet application, enabling secure management of HBAR and Hedera EVM-native assets.
Mainnet Upgrade
Hedera schedules a mainnet upgrade to version v0.68 on December 18, at 18:00 UTC.
Maintenance
Hedera has scheduled network maintenance for December 13th at 06:30 UTC.
Testnet Upgrade
Hedera is scheduled to upgrade its testnet to version 0.68 on December 8th at 18:00 UTC.
Testnet to v.0.68 Upgrade
Hedera schedules a testnet upgrade to version 0.68 for November 25 at 18:00 UTC.
Testnet Upgrade
Hedera schedules a testnet upgrade to v0.68 for November 20 at 18:00 UTC.
Testnet Upgrade
Hedera announced a scheduled upgrade of its testnet to version 0.68, set for November 13, at 18:00 UTC.
Listing on Coins.ph Coins Pro
Hedera’s native token HBAR was listed on the Coins.ph Coins Pro spot market on 12 November, with trading pairs available against PHP and USDT.
Google Cloud BigQuery Public Datasets Integration
Hedera has been added to Google Cloud BigQuery’s public datasets, providing scalable access to cross-chain data.
Mainnet Upgrade
Hedera has scheduled a mainnet upgrade to version v.0.66 on October 8, at 17:00 UTC.
Testnet Upgrade
Hedera will upgrade its testnet to version 0.66 on September 25 at 17:00 UTC.
v.0.65 Mainnet Update
Hedera has announced the upcoming mainnet rollout of version 0.65, set for September 24.
Testnet Upgrade
Hedera plans to upgrade its testnet to version 0.65 on September 4th at 17:00 UTC.
Shut Down Legacy HCS Mirror Node Endpoints
Hedera has issued a final deprecation notice confirming that legacy Hedera Consensus Service (HCS) mirror node endpoints will be permanently shut down on August 20, at 15:00 UTC.
Mainnet Upgrade
Hedera schedules a mainnet upgrade to version 0.64 on August 20 at 17:00 UTC.
Testnet Upgrade
Hedera plans to upgrade its testnet to version 0.64 on August 7th at 17:00 UTC, with an expected duration of approximately 40 minutes during which network disruptions may occur.



