The German Toy Fair is now over. One of the LEGO Toy Fair youtube videos (spieletest.at) has a decent amount of images of the 2015 LEGO sets. A brickset user has extracted some images of the LEGO City Deep Sea Explorers sets from the video which gives us a closer look at the theme.
LEGO 60090 Deep Sea Scuba Scooter
LEGO 60091 Deep Sea Starter Set
LEGO 60092 Deep Sea Submarine
LEGO 60093 Deep Sea Helicopter
LEGO 60095 Deep Sea Exploration Vessel