Solana has deployed the Alpenglow upgrade on its public testnet, reducing transaction finality from 13 seconds to 0.15 seconds through the new Votor consensus mechanism. Validators running Agave 4.3 can now test the migration on a live copy of the network, with mainnet activation penciled in for around September 28. SOL trades near $117, up 22.57% over seven days, but faces critical resistance between $116 and $123.35 that it must decisively clear to target $137.65 and eventually $150. Spot Solana ETFs pulled in $26.1 million in net inflows on September 21, and 23.2 million x402 AI-agent transactions were recorded over four weeks, indicating growing demand. The four-hour RSI near 71 flags an overbought market with risk of a pullback to $114.67 or deeper to $106.95 if sentiment sours.
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