The SEC has once again delayed the approval of Solana ETF applications from 21Shares and Bitwise.SEC has opened formal proceedings for further evaluation, citing investor protection concerns and the need to prevent market manipulation.Grayscale's Solana ETF bid was also postponed, indicating a broader slowdown in crypto fund approvals.The launch of Solana futures on CME provides a regulated alternative for SOL exposure amid ongoing delays in ETF approvals.