User blog comment:Aphrodite Sweetheart/Official Winx Club WOW and 4th movie discussion blog/@comment-2056915-20160622064512

The transformation for World of Winx is said to be named "Dreamix".

Source: http://worldofwinxclub.tumblr.com/post/146293012345/official-transformation-for-world-of-winx

Related images: http://www.michaelsfavorites2.com/winxclub2016/michaelswinxclub_no_stealing_newspage2016_1228.jpg (I do not upload it because it belongs to MichaelWinxClub)