That is if it ever gets released.
And if that's in GWX's hands, having a new SH title coming soon, I bet they're not gonna want to waste their time, specially given the fiasco that SH4 was compared to SH3, the only really good things SH4 has are time compression, graphics, and the US subs. So it'd be logical to drop any works on SH4 as it's already been said that GWX4 has been dropped.
I think only a miracle will provide us with such complex materials for SH4 now.
Luckily enough, there's already some good mods on the scene, so the SH4 fiasco isn't so much, now that it ain't a standalone, but a title that gets some good works released on the short-scheduling schemes that have always represented the smaller packs. It's not like I've done as many hours in SH4 as I did in SH3, but I can say there's some stuff that's worth trying.
So, a "Good job!" to all those modders, please.
Cheers