SIMD-0337: Markers for Alpenglow Fast Leader Handover

SIMD-0337 (Markers for Alpenglow Fast Leader Handover) is a Core Standard Solana Improvement Document by ksn6 (Anza), Ashwin Sekar (Anza), Kobi Sliwinski (Anza); proposal status Review.

Active on mainnet-beta since epoch 1005; active on testnet since epoch 978; active on devnet since epoch 1095.

Feature gates

• Feature gate: SIMD-0337: Markers for Alpenglow Fast Leader Handover, DATA_COMPLETE_SHRED placement rules

Vortex

• Consensus leaderboard
• Fees leaderboard
• Validators
• Stake pools
• Decentralization
• Client versions
• Cluster status
• Governance
• Feature gates
• SIMDs
• Activity
• API and AI usage