The U.S. Securities and Exchange Commission (SEC) is urging issuers to revise and resubmit their spot Solana ETF applications by the end of July, suggesting that the approval process will be quicker than expected. Previously, REX-Osprey SOL and Staking ETFs received automatic approval and began trading last week under different regulatory rules, meaning that the spot Solana ETF will join Bitcoin and Ethereum as the only approved spot cryptocurrency fund in the U.S., while applications for XRP, Dogecoin, and Litecoin are still pending review.