Well if you notice on the DE EF instructions. It is indicated that the taxpayer signature is not required.

Everything else regarding e-filing looks fine. So I have been going under the assumption that DE has removed the signing requirement. Other states do this as well. For example, North Carolina.

Also, dingbat me, if you notice the DE 8453 that you had been printing shows 2020 as the tax year.

I think this must have been a programing thing. Thus, the need to wait for the final update.