Banff - Elastic Subnets - Fuji Pre-release

Please note that this release is unable to run mainnet - and will display "mainnet is not supported" if attempted to run with a mainnet configuration.

This upgrade adds support for creating Proof-of-Stake Subnets.

The changes in the upgrade go into effect at 10 AM EDT, October 3rd 2022 on the Fuji testnet. After Fuji is updated and verified, a mainnet compatible release will be published.

All Fuji nodes should upgrade before 10 AM EDT, October 3rd 2022.

The supported plugin version is 16.

Upgrades

• Activated P2P serialization format change to Protobuf
• Activated non-AVAX ImportTx/ExportTxs to/from the P-chain
• Activated Banff* blocks on the P-chain
• Deactivated Apricot* blocks on the P-chain
• Activated RemoveSubnetValidatorTxs on the P-chain
• Activated TransformSubnetTxs on the P-chain
• Activated AddPermissionlessValidatorTxs on the P-chain
• Activated AddPermissionlessDelegatorTxs on the P-chain
• Deactivated ANT ImportTx/ExportTxs on the C-chain
• Deactivated ANT precompiles on the C-chain

Deprecations

• Ubuntu 18.04 releases are deprecated and will not be provided for >=v1.9.1

Miscellaneous

• Fixed locked input signing in the P-chain wallet
• Removed assertions from the logger interface
• Removed --assertions-enabled flag
• Fixed typo in --bootstrap-max-time-get-ancestors flag
• Standardized exported P-Chain codec usage
• Improved isolation and execution of the E2E tests
• Updated the linked hashmap implementation to use generics