PE6 supports simple simulations (animated graphics) directly and there will be a tool to build your own graphic animation (e.g. based on a photo of your project) early in 2014.
You can see a few examples already of animated simulations via the 'Simulation' setting in Workspace Explorer.
PE6 also supports more complex integration with third party simulation software (such as Webots' 3d models) via pipes. If you already have a Webots license we can send you some sample files to try out.