Recently Clash Royale on its official Twitter account has shared a sneak-peak of the upcoming new card in the game. Clash Royale tweeted a picture of an anchor and said 'Like Ram Rider, this new Legendary character will be bringing a unique mechanic to Clash Royale'.
If we have to take a guess, we will say that this new card has to do something with the water. We all know that there is a river separating the two sides in all arenas, so this might be something related to that. Also in the tweet, there is also a hashtag 'Clash Royale Season 1' so in the next update (June) clash royale might also be getting a season pass, just like Clash of Clans.