The following downloads out of that album set are already available:
Modern Talking: Your my heart Your my Soul (New Version 2017)
Modern Talking: Modern Talking Pop Titan Megamix 2k17 (3-Track DJ Promo)
Pietro Lombardi & Alexander Klaws & Prince Damien & Juliette Schoppmann: We have a dream (New Version 2017)
EDIT 19.5.2017:

The Release of the Vinyl-Edition of CD2: Back for Gold is previewed for 16.6.2017.