Fork waves
Sepolia → Hoodi → Mainnet, with the minimum client versions for each.
Sepolia
Oct 6, 2026, 13:53 UTC · epoch 353,024
Hoodi
Oct 27, 2026
3
Ethereum Mainnet
| Client | Sepolia | Hoodi | Ethereum Mainnet |
|---|---|---|---|
| Execution | |||
| Besu | ≥ 26.9.0 | — | — |
| Geth | ≥ 1.17.7 | — | — |
| Reth | ≥ 2.7.0 | — | — |
| Erigon | ≥ 3.7.1 | — | — |
| ethrex | ≥ 29.0.1 | — | — |
| Nethermind | ≥ 2.1.0 | — | — |
| Consensus | |||
| Teku | ≥ 26.9.1 | — | — |
| Prysm | ≥ 7.2.1 | — | — |
| Caplin (Erigon embedded CL) | ≥ 3.7.1 | — | — |
| Grandine | ≥ 3.0.0-rc.0 | — | — |
| Lodestar | ≥ 1.49.0 | — | — |
| Lighthouse | ≥ 8.3.0-rc.0 | — | — |
| Nimbus | ≥ 26.10.0 | — | — |
SepoliaOct 6, 2026, 13:53 UTC · epoch 353,024AnnouncementPrysm 7.2.0 and Teku 26.9.1 default to a 60M gas limit after activation; Teku needs --validators-builder-registration-default-gas-limit=200000000 for 200M.
HoodiOct 27, 2026tentativeAnnouncementTentative date from All Core Devs notes. The EF announcement still lists the Hoodi epoch as TBD; update epoch, time and versions when published.
Ethereum Mainnetdate TBANo date. Roadmap target is Q4 2026, unconfirmed.
Hegota (Heze + Bogota)
planning
Hegota (Heze + Bogota)
planning1
Sepolia
2
Hoodi
3
Ethereum Mainnet
Client versions not published yet.
Sepolia
Oct 14, 2025
Hoodi
Oct 28, 2025
Ethereum Mainnet
Dec 3, 2025, 21:49 UTC · epoch 411,392
| Client | Sepolia | Hoodi | Ethereum Mainnet | Holesky |
|---|---|---|---|---|
| Execution | ||||
| Besu | — | — | ≥ 25.11.0 | — |
| Geth | — | — | ≥ 1.16.7 | — |
| Reth | — | — | ≥ 1.9.3 | — |
| Erigon | — | — | ≥ 3.3.0 | — |
| Nethermind | — | — | ≥ 1.35.3 | — |
| Consensus | ||||
| Teku | — | — | ≥ 25.11.1 | — |
| Prysm | — | — | ≥ 7.0.0 | — |
| Caplin (Erigon embedded CL) | — | — | ≥ 3.3.0 | — |
| Grandine | — | — | ≥ 2.0.0 | — |
| Lodestar | — | — | ≥ 1.36.0 | — |
| Lighthouse | — | — | ≥ 8.0.1 | — |
| Nimbus | — | — | ≥ 25.11.1 | — |
SepoliaOct 14, 2025unverifiedAnnouncementDate confirmed by press coverage; exact slot not transcribed.
HoodiOct 28, 2025unverifiedAnnouncementDate confirmed by press coverage; exact slot not transcribed.
Ethereum MainnetDec 3, 2025, 21:49 UTC · epoch 411,392Announcement
HoleskyOct 1, 2025, 08:48 UTC · epoch 165,120Announcement
Sepolia
Mar 5, 2025, 07:29 UTC · epoch 222,464
Hoodi
Mar 26, 2025, 15:56 UTC · epoch 2,048
Ethereum Mainnet
May 7, 2025, 10:05 UTC · epoch 364,032
Client versions not published yet.
Ethereum MainnetMay 7, 2025, 10:05 UTC · epoch 364,032Announcement