Cardiff's goalless draw against Charlton on Tuesday ensured there will be two Welsh clubs in the top flight for the first time, and both sets of fans are already eagerly anticipating the meetings between the fierce rivals.
The Bluebirds' promotion also continues a superb season for Welsh club football, following as it does on the back of Swansea's Capital One Cup success and Wrexham's FA Trophy triumph.
But Laudrup still has his sights on a top-10 Premier League finish, and the hype over the Welsh derby can wait as he focuses on Saturday's meeting with Southampton.
He said: "For Welsh football to have two teams in the Premier League is a great achievement, I know for the fans they will be two very interesting games, but that is next season.
"We still have to keep our eyes on this season, we still have six games to go and if we take this game against Southampton, it's a key game.
"If we want to stay in the top 10 - and I say stay because we have been in the Top 10 for many weeks - we need a win on Saturday, especially when you look at the games coming up, including games against all the top three."