Saturn One Upgrade product
Overview
Saturn One is a major protocol upgrade to Rocket Pool, the decentralized Ethereum liquid staking protocol, deployed to Ethereum mainnet on February 18, 2026 and specified in RPIP-55. It cuts the node-operator bond to 4 ETH per validator, with the remaining stake supplied by rETH depositors, and introduces 'megapools' plus express and standard validator queues to improve capital efficiency. The upgrade also activates a fee switch directing a share of protocol ETH revenue to the RPL token and adds a protocol-level withdrawal buffer intended to improve rETH liquidity. It is the middle phase of a Saturn Zero / Saturn One / Saturn Two roadmap.
Within the DeFi Intel graph, Saturn One Upgrade connects to 8 tracked entities, most strongly to Rocket Pool, Rocket Pool, Rocket Pool Saturn One Mainnet.
Relations
Top connections in the DeFi Intel knowledge graph (confidence-weighted, 8 of 8 total).
| Relation | Connected entity | Confidence |
|---|---|---|
launched | Rocket Pool | 95% |
upgrade-of | Rocket Pool | 95% |
activates | Rocket Pool Saturn One Mainnet | 95% |
activated-by | RPL ETH-Accrual Fee Switch | 95% |
introduced-by | Megapool Validators | 95% |
activated | Rocket Pool Saturn One Mainnet | 95% |
transforms | RPL | 90% |
upgrade_of | Atlas Upgrade | 85% |
Frequently asked questions
What is the Saturn One upgrade?
Saturn One is a major protocol upgrade to Rocket Pool, deployed to Ethereum mainnet on February 18, 2026 and specified in RPIP-55. It cuts the node-operator bond to 4 ETH per validator, introduces megapools, and activates a fee switch directing a share of protocol ETH revenue to the RPL token.
What does the Saturn One upgrade do for node operators?
Saturn One cuts the node-operator bond to 4 ETH per validator, with the remaining stake supplied by rETH depositors, and introduces express and standard validator queues to improve capital efficiency.
How does Saturn One affect the RPL token?
Saturn One activates a fee switch that directs a share of protocol ETH revenue to the RPL token, and it is the middle phase of a Saturn Zero / Saturn One / Saturn Two roadmap.