Ok, I should have googled the info first. Here's what I found on a forum......The finish has nothing to do with the lamination method. Both a matte finish and a gloss finish can be achieved on a dry carbon or wet lamination lay up. It is merely a coating that is added AFTER the part is removed from the tool during the finishing stages. There is more to it than that... but thats just the easiest way to understand it.
both can have UV protection applied.
marketing gets confusing because there is no exact spec or definition of dry vs wet. dry carbon is often said to have a matte finish, so they call matte finish carbon dry carbon fiber, which is false. Vacuum Infusion regardless weather it uses pre-preg or not is still wet carbon. however if an autoclave is used using pre-preg that is real dry carbon.
as said above you can have the look of matte or glossy with either type. the process of making that look either way varies from manufacture to manufacture depending on wet or dry process