Solana is preparing for several major network upgrades over the coming weeks, with Transaction V1 scheduled to go live on Sept. 9 and the first phase of a rent reduction expected to begin during the week starting Aug. 31.
Solana Foundation Vice President of Technology Jacob Creech shared the update on Aug. 30, outlining the network’s next steps as developers continue working to improve speed, scalability, and efficiency.
One of the biggest changes is Transaction V1, which will increase Solana’s maximum transaction size from 1,232 bytes to 4,096 bytes. That is more than three times the current limit and will allow developers to build more complex applications and process larger amounts of data within a single transaction.
The larger transaction format could support advanced features such as zero-knowledge proofs, complex multisignature transactions, cross-chain operations, and other data-heavy applications.
Importantly, developers will need to choose to use the new format. Existing legacy and version-zero transactions will continue working normally, meaning the upgrade will not disrupt current applications.
At the same time, Solana is beginning the first stage of a planned rent reduction program. The goal is to eventually reduce rent requirements by 90%, but the change will happen gradually through five separate phases.
On Solana, developers must lock up a certain amount of SOL when creating accounts that store data on the blockchain. This system helps prevent uncontrolled growth of network storage. Since the locked SOL can usually be recovered when an account is closed, the rent system acts more like a refundable deposit than a permanent fee.
Lower rent requirements would make it cheaper for developers to create and maintain on-chain accounts, potentially reducing costs for applications that manage large numbers of users.
Solana is also continuing its push for faster transaction processing. The network recently reduced its target slot time from 400 milliseconds to 350 milliseconds and plans further reductions to 300, 250, and eventually 200 milliseconds.
However, Creech clarified that these speed improvements will follow their own activation schedule. The Sept. 9 launch of Transaction V1 does not automatically mean shorter slot times will go live on the same day.
Each reduction will require separate testing and approval from validators, allowing developers to monitor network performance before moving to the next stage.
Looking further ahead, Solana is still targeting October for Alpenglow, a major redesign of the network’s consensus system. The project aims to reduce transaction finality to around 150 milliseconds, making transactions reach final confirmation significantly faster than they do today.
While October remains the current target, developers have not confirmed an exact launch date. The upgrade still needs additional testing and network support before it can be activated on the mainnet.
For now, Solana’s immediate focus is on rolling out the first rent reduction phase and successfully launching Transaction V1 on Sept. 9. Additional slot-time reductions and the highly anticipated Alpenglow upgrade are expected to follow as testing and validator approvals continue.
The upgrades are part of Solana’s broader effort to improve network performance, lower costs for developers, and support the growing demand for more advanced blockchain applications.
