In reply to NottsRich:
On Sunday 6th there was no snow or ice on the ZigZags. The walk across the top to the Coire had some patches of fairly soft snow, so no crampons needed there. there has been quite a rockfall across the zigzags & I'd wear a helmet in case there are any small bits still drifting down.
It was pretty wet so a frost (which I think is on the way) could put a nice glaze on it.
(the return leg of the circuit was clear to apart from some (soft) snow at the top - which a good frost could change rather)