ProSeries seems to be saying, in the notification posted today, if you are in the disaster areas and your tax return is due June 15th, that if you can't file by then you have to file Form 4868 by May 17th.

I do not believe that to be true. I believe the extension request has to be filed by June 15th to extend the return to October 15th.

What I do think is true is that if you want to e-file the extension, THAT must be done by May 17th as the IRS has not programmed their system to recognize extension requests after May 17th even from a disaster area.

So, a paper Form 4868 would be required.