Franklin Templeton, Galaxy Digital, VanEck, and Fidelity have submitted updated S-1 filings for US Securities and Exchange Commission approval to list spot Solana ETFs. The updates come after the SEC, which has approved Bitcoin and Ethereum spot ETFs, requested adjustments in filings related to in-kind redemptions and staking. The move suggests increased likelihood of approval for Solana ETFs, potentially within two to four months.