"is due today" is correct and can be used in written English. You could use it to describe something that is expected to be completed by the end of the day. For example, "I have a report that is due today.".
That decision is due today.
A new medical bulletin on the pope is due today.
But Keynes perhaps also gets more credit than he is due today.
A decision is due today on whether the Mid Staffordshire NHS foundation trust should be dissolved, reports the Guardian.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK