A. Y. 2020-21

F.Y is 1.4.19 to 31.3.20

The A.Y. for 2020-2021 would be the F.Y. 2019-20 only. i;e 31/03/2020 ONLY. There is no change in the F.y. or A.y.
The A.Y. is NOT extended upto 30/06/2020.
The only changes made are, the payments made (like LIC, school fee, rent etc) during the period 01/04/2020 to 30/06/2020 are allowed as deduction in the F.Y. 19-20 itself though it relates to the F.Y.20-21.
(Normal rule: Any payment made in any F.Y. is allowed as deduction in that particular F.Y. only)
Also the due date for filing return for F.y.19-20/A.y.20-21 is extended to 30/11/2020.

Thanks for information