First things first - new pictures!
(Hat tip to our friends over at Winx-Fashion and Believe in Winx)
Something I noticed about these pictures was that "The Magic is Back" is not located anywhere on either picture, instead being simply labeled Winx Club 2: The Movie. This leads me to believe that "The Magic is Back" was simply the tagline of the movie, not the actual name of movie. Also note that on the official poster, it's "The Magic is Back..." Normally titles to not contain "..."
The translation of the second poster: "Are you ready to live a magical new adventure?"