It is Copper sulphate (main ingredient of Bordeaux mixture) which is going to be withdrawn "as a garden fungicide." I was told it was still going to be sold in Wine making outlets, but my memory may be at fault.
The reason is that Copper is very toxic to all life, so maybe spraying it is not such a good idea. Don't think it has done me any harm, grew up in Widnes which had Copper smelting and Sulphuric acid production. We lived in a chemical cloud of Copper sulphate.