The official Ducktales Facebook page has recently updated with the first teaser for the upcoming reboot series. The series will launch on Disney XD in Summer 2017.
https://www.facebook.com/ducktales/videos/899475663522441/?autoplay_reason=gatekeeper&video_container_type=0&video_creator_product_type=0&app_id=262454873614&live_video_guests=0