True - the arrangement I've heard (and I think reproduced in this thread) is 4x non stop A359 and 3x via MUC B77W.
Personally, this seems unlikely to me. I can't see the benefit of continuing with a MAN-MUC-SIN on 3 days when surely most folk will want to fly non-stop provided they are aware of the different schedules. If the airline want to keep a B777 on the MUC-SIN, why not just turn it round there even with the extended ground time. And if they plan a A359 for MUC, why use the B777 at all? Is First class more of an issue for MUC?