In reply to Blodwyn:
No, there is definitely a wooden handrail on the final section of the zig zags just below Bwlch Glas (for maybe 100m, if that). I think it went up in late September. I think the reason for it is the bags of stones placed on that section for future path repairs constricting the path, and putting walkers on the outside edge of the path. No idea what the plan is once path repairs are finished, doesn't seem sturdy enough to be left in place long term.