If there was one theme I was not expecting to hear rumors that Lego would produce, its Scooby Doo. It seems that Lego has been working on a spooky theme, and now its seems an official Lego Scooby Doo theme is the top contender for this release. This new theme would be hitting shelves around May or June of 2015, and will consist of 4 sets. It seems that the iconic Mystery Van, a Haunted House, and two unknown sets are in the works. With the whole gang represented in Minifigure form. Fred, Shaggy, Scooby-Doo, Daphne, and Velma. Also expect to see a few of the monsters represented. I wonder if they will be regular Minifigures wearing costumes? Because that would be fun.
Hothbricks reported on a Lego Scooby Doo theme first. Their user Miniworld seems to be confirming rumors too: http://www.hothbricks.com/2014/11/rumeurs-2015-grande-roue-nouveau-theme/#comments