Riiiight I can’t be exactly precise. But I got back from there today…
The best info I could find online is the MB Wales website. Which is kinda accurate but there was a more recent update printed out by the trail info in the Afan car park by the trails maps (sorry I shoulda taken a photo).
SO from memory… There ARE diversions on most trails on the other side of the valley from the Afan car park (ie Whites, Wall, Blade, Skyline).
The last descent of Wall (best bit IMHO) is definitely closed. Energy section of Whites is closed. Helter Skelter on Blade (?) is close. All of Rookie blue is closed. The top fireroad bit linking Wall and Whites (ie W2) is closed.
That’s my best memory dump. I only had 2 half days at Afan with my young lad so Blue Scar and Penhydd were enough for us!
I HTH