Funny enough that's approaching a renault "W" wing. The interaction between middle and end would be interesting.
Some more info on the F duct. It seems a whole new version was designed for monza.
Maybe one with a lower shark fin duct? and main element stalling instead?
Q: So you will use the F-duct this weekend?
TG: Yes, we’ll be running F-flap at some point on Friday and we’ll make the decision on Friday night as to whether we’ll race with F-flap or a conventional solution. We’ve developed both options for Monza. It’s not straightforward to get the F-flap to work on a low-downforce rear wing, but I think being the leaders in this technology we’re slightly better placed to get the most out of it.
Looks like they're trying to make it work for the low down force wing.
I'm expecting a very narrow shark fin duct. Similar to renault, that allows cross flow from both sides of the wing separated by the duct.