It sounds like your pressure plate bit the dust. The warning light is from the DSC. It sensed that the engine rpm is not in sync with the speed of the car (i.e. the clutch is slipping). I'm not sure if this is covered under the maintenance plan but do your homework to find out what is definitely covered so you're not shelling out money on expensive parts and labor if you don't have to.
Also, clutch hydraulics share the same fluid as the brakes. If the fluid was low you would see the brake warning light. But, if I'm not mistaken, the clutch pulls the fluid from a high spot in the reservoir, so if the slave cylinder started leaking it would be able to leak enough fluid out to trigger the light.