A new paper was published this month. A overview is here:

On the reality of the quantum state

The preprint on Arxiv is here:

Arxiv preprint:On the reality of the quantum state

note: they are not saying the wave function itself is physically real/tangible (something of physical substance). rather:

"The argument depends on few assumptions. One is that a
system has a real physical state --  not necessarily completely
described by quantum theory, but objective and
independent of the observer."

The wave function is still thought of as an object in a phase space.

anyway, I wanted to make people aware of this paper.