As per the recent tweet of CBIC, the representations have been received on non-availability and extension of date of FORM GSTR-4 for F.Y 2019-20 on the common portal. The matter of extension of date of GSTR-4 for F.Y 2019-2020 is under consideration by the GST Implementation Committee.
Source: https://twitter.com/cbic_india/status/1280459804993974273