11 GX u say... so that basically means we can predict them all already :/
Scizor GX, Blaziken GX, Salamence GX, Articuno GX, Electrode GX, Feraligatr GX, Mr. Mime GX, Banette GX, Rayquaza GX, Stakataka GX, Blacephalon GX.
At least if we have to believe that this set is champions road + sm7. on the other hand this would mean that sm7 in japan would ONLY feature Rayquaza/Stakataka/Blacephalon which would be kinda weird I guess to only have 3 gx.
Unless ofc the "3 ultra beasts" don't refer to cards like baby buzzwole/xurkitree like we've already seen but to blacephalon GX and stakataka GX as well, meaning there might be 2 more slots open? Who knows? Only time can tell.
EDIT: Ofc Blacephalon GX isn't revealed or mentioned anywhere yet, but it just seems logical to me that it would be in the same set as Stakataka GX.