There are moves to revive Gaelic, but it's complicated by the fact that an awful lot of Scotland never spoke it. All of the North of England and the South of Scotland spoke what we now think of as Welsh, until it was supplanted by English. Gaelic was the language of the Western Isles and Highlands. There is a movement to campaign to have Scots accepted as a language rather than a dialect, but only time will tell whether anything will come of it.