Gamers who have the PS Vita port of Rayman Legends can expect the missing content to arrive with an update on November 26th. Make sure to look at the “Update” icon on the Live Screen when November 26 arrives.
The Invasion mode was the content Ubisoft omitted from the PS Vita version of Rayman Legends due to the time needed to put it on the handheld version. Fortunately, gamers who bought the console version never had this problem as it was included. Well, at least PS Vita owners will be pleased to see that update in two weeks!