Solana expanded its maximum transaction size from 1,232 to 4,096 bytes on September 15 through the Transaction V1 upgrade, representing more than a threefold expansion. The feature was activated at the start of mainnet epoch 1,035 at approximately 01:00 UTC. SOL showed no clear upward reaction and traded modestly lower, hovering around $97 after losing the psychological $100 level. The upgrade allows developers to pack more instructions, signatures, and data into a single atomic transaction without changing network speed, throughput, or fees. SOL finds key support between $95 and $98, with major resistance at $110.
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