SIMD-0391
BPF Stake Program v5.1.0
Upgrades the BPF stake program to v5.1.0 with fixed-point warmup and cooldown math.
BPF Stake Program v5.1.0 is active on Solana mainnet since epoch 1026 — activated ≈ 5 days ago.
- mainnet
- active since epoch 1026 · ≈ 5 days ago
- testnet
- active since epoch 1011 · ≈ 2 weeks ago
- devnet
- active since epoch 1131 · ≈ 10 days ago
Telegram alertsKnow the moment an upgrade is queued — join @xrootdev_updates or message the bot /start for a DM.
How we know
Solana ships protocol changes behind on-chain switches called feature gates. This page reads the switch itself about every minute — once an activation is requested, it completes at the next epoch boundary, which is where the countdown comes from. No announcements, no invented dates.