They uploaded the trailer to their new VeeJoy-Service. You can see it here:
Sadly, nothing really new except for a render of the train, confirming a longer BigDipper with 4x4 seating:
VEEJOY - Ω – Die Baudokumentation
Der Europa-Park wächst weiter! In Deutschlands beliebtestem Freizeitpark entsteht in den kommenden Monaten einer der modernsten und spektakulärsten Coaster Europas.
www.veejoy.de
Sadly, nothing really new except for a render of the train, confirming a longer BigDipper with 4x4 seating: