Solana developer Anza said Monday that Alpenglow, the network’s largest proposed consensus overhaul to date, is available in a community test pool, marking an important step toward a potential mainnet launch.
The update means that validation operators can now test software designed to move Solana from its current consensus system, which combines Proof of Stake with TowerBFT and Proof of History, towards a new architecture aimed at dramatically reducing finality times and improving network responsiveness.
“Alpenglow is active in the community test pool,” Anza wrote on
Today, Solana relies on Proof of History, a cryptographic clock that timestamps transactions, along with TowerBFT, a voting mechanism that validators use to agree on the state of the blockchain. While the design has helped Solana achieve high performance and low rates, some have pointed to network outages and instability during periods of high demand.
Alpenglow proposes replacing important parts of that system with a redesigned framework focused on new components. In simple terms, the new model aims to allow validators to communicate and confirm blocks more quickly and efficiently, which could reduce transaction finality from several seconds to near real-time speeds.
The start of the community test group also suggests that the validation software can successfully perform what the developers informally call “Alpenswitch”, transferring validation nodes from the existing Solana process to Alpenglow in a live network environment.
The testing milestone comes just days after Solana co-founder Anatoly Yakovenko said at Consensus Miami 2026 that Alpenglow could hit mainnet as early as next quarter if testing continues smoothly.
Read more: Solana ‘Alpenglow’ update could arrive next quarter, says co-founder Yakovenko
