Applications will continue processing transactions as they do now, while users will not need to change wallets or adjust how they send funds.
Alpenglow has operated for more than four months on a dedicated network built to test the upgrade. Its move to Solana’s established testnet will determine whether the wider network of computers and services supporting the blockchain can transition together.
Participating validators must run Agave 4.3, the primary software used to operate Solana. The client is maintained by Anza, one of the companies involved in developing the network.
On Sept. 21, Anza recommended Agave 4.3 to all mainnet validators after initially releasing it to operators responsible for 10% and then 25% of the SOL securing the network.
Firedancer and Frankendancer, two alternative validator clients developed by Jump Crypto, do not yet support the Alpenglow test.
The clients are designed to reduce Solana’s dependence on a single software implementation, preventing an Agave flaw from affecting every validator simultaneously. Because they are not yet part of the test, the first Alpenglow migration will run entirely on Agave.
Anza’s schedule lists Sept. 28 as the tentative date for activating features included in Agave 4.3 on the main network. The date does not confirm Alpenglow’s launch, and Anza’s tracker still showed the testnet transition as pending early Wednesday.
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