My understanding is the income tax returns have an extended deadline but not the following:

Estate and gift taxes, excise taxes, payroll taxes, and information returns such as 1099 forms do not qualify for the July 15 delay. What's more, tax items that didn't regularly have April 15 deadlines don't qualify. 

https://www.inc.com/emily-canal-irs-tax-deadline-july15-coronavirus.html?icid=landermore

Gift taxes are not mentioned here in the IRS new deadline:

https://www.irs.gov/newsroom/tax-day-now-july-15-treasury-irs-extend-filing-deadline-and-federal-tax...

Maybe you have something after this?