There seems to be some confusion on another site that Saudi have handed back their MAN slots.
They have not handed slots back, and in fact the flights have now made it into GDS preview, but not yet bookable:
SV198 JED 0425 MAN 0815
SV199 MAN 1010 JED 1935
Wed, Fri, Sun B777-200 from 22nd Jan
(GDS has this start date but could be earlier/later as full details are not yet loaded)