Fujifilm have released a new film simulation which they have called “Nostalgic Negative”. This simulation seems to be very close to Provia in the side-by-side examples I have seen. The new film simulation from Fujifilm turns reds to a very slight orange and there are other little tweaks, such as slightly raised shadows.
Nostalgic Provia isn’t a direct copy of the new Fujifilm simulation, but it’s rather a little tweak of Provia, with there being a slight tweak to the reds, and raised highlights. There are plenty of samples below for you to look at.
As you can see, there’s a very subtle change to Provia for this recipe,