The flyers give a few more details to the ones already shared in this article as well as some correction (for example a slight weight increase in some cases and lens elements design changes for the 23mm f/1.4).
In the meantime, the Viltrox 85mm f/1.8 autofocus lens for Fujifilm X is a best seller and so far the feedback is definitely very positive. It’s not a Fujinon, but it’s also so much cheaper, that you definitely get great performance for little price.
Believe me, there isn’t a day, that I am not tempted to get it. But for me, making this step, would mean go all in with the GFX system (and leaving the X system), and given the great results I get with my X gear, I am not yet ready for such a big jump (and investment).