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On September 15, The New York Times reported that during the ongoing six-month conflict between the U.S.-Israel alliance and Iran, Iran has repeatedly used missiles and drones to attack Gulf states, with U.S. military bases in the region also coming under fire, highlighting the limitations of the U.S. security assurance system. As a result, Gulf countries such as Saudi Arabia, the UAE, Bahrain, and Kuwait are exploring new security solutions, including strengthening regional defense cooperation and engaging in direct diplomatic contact with Iran. The report indicates that Gulf states do not have a clear alternative to U.S. security guarantees, and neither China nor Russia has directly intervened to protect these nations. Analysts believe that a more realistic option is to establish more defense partnerships to supplement rather than replace U.S. security protection. Meanwhile, Gulf states are attempting to ease tensions with Iran through diplomacy. Talks between Gulf states and Iran scheduled for Monday were postponed due to disagreements over shipping arrangements in the Strait of Hormuz, but related diplomatic efforts are expected to continue. Given Iran's geographical proximity to Gulf states, it is difficult for both sides to avoid direct contact in the long term.

On September 15, Solana completed a mainnet upgrade, raising the maximum size limit for a single transaction from the previous 1,232 bytes to 4,096 bytes, an increase of over 3 times, providing developers with more space to execute more complex operations within a single transaction. According to the Solana Foundation, this upgrade officially took effect at around 1 AM UTC on September 15, coinciding with the start of the 1,035th Epoch of the mainnet. The upgrade also introduces the v1 transaction format while maintaining full backward compatibility with the old transaction format, allowing existing transaction formats to continue being used; protocols wishing to utilize the larger transaction space will need to upgrade to the v1 format. The Solana Foundation stated that this upgrade is primarily aimed at helping developers integrate work that could not previously fit into a single transaction into on-chain transactions, including zero-knowledge proofs, multi-signature transactions, and new on-chain signature schemes. Recently, Solana has been continuously advancing network performance upgrades. In August, Solana reduced the block slot time from 400 milliseconds to 350 milliseconds; there are also plans to further reduce it to 200 milliseconds. Additionally, on August 28, Solana validators approved a plan to double the rate of decrease in the network's annual inflation rate to lower the future issuance of SOL.

On September 15, according to Cointelegraph, Solana has increased the maximum transaction size on its mainnet from 1232 bytes to 4096 bytes, expanding it by more than three times. This allows developers to accommodate more complex operations in a single transaction, including zero-knowledge proofs, multi-signature transactions, and new on-chain signature schemes. The upgrade was activated around 1 AM UTC on Tuesday at the start of the 1035th epoch on the mainnet, introducing the v1 transaction format, which is fully backward compatible with the old format. Existing applications and wallets do not need to change, but those wishing to utilize the larger capacity protocol must upgrade to the v1 format. A spokesperson for the Solana Foundation stated that the upgrade aims to unlock workloads that could not previously fit into a single transaction. Additionally, in August, Solana reduced the block slot time from 400 milliseconds to 350 milliseconds, and on August 28, validators approved a proposal to double the annual deflation rate.