Hello!
So far, there was no information on this matter.
At the same time, seeing that vsf cannot yet cope with the 42mm thickness due, when using the current movt., Limiting consumption and so on, not the most typical and demanded panerai, I do not think that without serious updates to their technical capabilities, they will go in 38mm, given that the wrong thickness will become even more evident in the small area of the 38mm diameter watch.
However, we have seen several 42mm luminors 1950 releases in recent weeks, and I think more are just around the corner. It seems like a safer way for VSFs to go into small diameter PAMs. I am sure, having made a new case, they will squeeze everything out of it while they think about what is next.