The US SEC has extended its review timeline for proposed spot cryptocurrency ETFs tied to XRP and DOGE.The Commission is seeking public comments on proposed ETFs including 21Shares Core XRP Trust, Grayscale XRP Trust, and Grayscale Dogecoin Trust.SEC has postponed decisions on XRP and DOGE ETFs to analyze investor protection and market integrity standards outlined in the Exchange Act.Bloomberg ETF analyst mentioned that early approvals for XRP and DOGE ETFs are unlikely, and the full evaluation time could extend until October.