Solana triples transaction capacity with v1 upgrade

Solana is targeting September 9 for Transaction v1, a new format that raises the maximum serialized transaction size from 1,232 bytes to 4,096 bytes. Summary Solana plans to raise maximum transaction size from 1,232 bytes to 4,096 bytes Wednesday mainnet. Transaction v1 remains optional, while legacy and v0 formats continue operating under existing size limits. Applications reading blocks must support version one or risk errors when encountering the new format. V1 removes address lookup tables and stores resource limits directly within each transaction’s configuration metadata. Solana’s official roadmap labels mainnet activation pending, making the September 9 schedule potentially changeable still. The increase gives developers about 3.3 times more transaction space. Solana’s official roadmap says the additional capacity can accommodate zero-knowledge proofs, large multisignature operations, batches and some onchain signature schemes. Large operations previously had to be divided into several transactions when their instructions, signatures and account information exceeded the 1,232-byte ceiling. That process added complexity because one transaction could succeed while another step...