TurboTax is currently in the process of updating the state returns.
Some states did not change their date until after others so it is taking a bit longer to update all of the state due dates. I recommend checking back in a day or two.
In regards to your estimated tax payments, your first estimated payment is not due until July 15, 2020. But be aware, this is currently the same payment date for the second estimated payment.

**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"