Due date of filing GSTR-1 has not been extended, as till now there is no legal update from the side of department. A fake notification is making round in the social media. A press release has also been issued in this regard by Press Information Bureau (PIB). You may click the link below to access the press release issued PIB in this regard.
Read more at: http://pib.gov.in/PressReleseDetail.aspx?PRID=1516261