Afaik they just discovered that Ice has a layer of water ("pre-melted ice) at the surface, which is the lubricant that makes ice slippery.
So, imo ice is wet ^^
Eh, that's what they called it in the article and I'm neither a physicist nor a material scientist. They made a definite distinction between the two forms of the materials in this and other articles related to the topic which I was too topic-uninformed to understand. So you might be right :D