The Goods and Services Tax Network (GSTN) states that since the last date of filing Form GSTR-1 for April, 2021 has been extended up to May 26, 2021 and IFF up to May 28, 2021, the Form GSTR-2B for April, 2021 shall be generated on May 29, 2021
Source from: https://www.gst.gov.in/