What changed
Solana starts testing upgrade that could cut finality from 12 Alpenglow would let exchanges, bridges and merchants treat payments as irreversible almost immediately 8 seconds to 150 milliseconds
Why it matters
Exchange operations around SOL can change volatility, liquidity, or sentiment. The concrete detail to watch is solana starts testing upgrade that could cut finality from 12
Trading lens
Use this as constructive context from coindesk.com. Watch whether alpenglow would let exchanges, bridges and merchants treat payments as irreversible almost immediately confirms momentum, invalidates active bias, or changes timing.