Quote Originally Posted by Jojoya View Post
But that could also be accompanied by a reduced success rate for advanced melding on the level VII and VIII materia compared to what we've seen for VI in Stormblood.

I wouldn't get too excited yet until we see what happens.
From the patch notes:
Attempts to affix grade VIII materia will always result in failure when it is used as the second or later materia in advanced materia melding.
The success rate for the advanced melding of grade I, II, III, and IV materia has been increased.
V and VI appear to have same success rate as before, VII will likely be worse that VI, and VIII is 0%