If you're interested in cutting edge Construct features try the Beta releases. These releases should not be used unless you are willing to tolerate some bugs.
Hotfix for r271
New sub-layers feature; effect compositor updates; bug fixes
New effect compositor with improved effect features; bug fixes
Timeline audio tracks; web adverts; lots more updates
Bug fixes
Hotfix for r265
Import animated images; Z scale; usability improvements & more
Mouse look in 3D; Timeline value tracks; bug fixes
Orthographic projection; 3D camera updates; new 3D examples & more