The U.S. Securities and Exchange Commission (SEC) has requested issuers of ETFs for cryptocurrencies including Litecoin (LTC), XRP, Solana (SOL), Cardano (ADA), and Dogecoin (DOGE) to withdraw their 19b-4 filings. This move follows the approval of new generic listing standards that eliminate the need for such filings. Withdrawals of these filings could begin as early as this week, streamlining the process for these ETFs to be listed.