Has 10/15 IRS Extension Due Date Been Moved in Louisiana?

If a Louisiana resident paid their estimates and filed an extension to October 15th, I heard this date might now be February. But I can't find anything specific stating this, it seems more like quarterly payments are extended. Does anyone know the exact details for the 10/15 deadline, and would Louisiana state tax extension move as well with the individual federal additional extension for Louisiana residents due to Francine?