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.
3D model improvements; bug fixes; new examples & more
Patch release
More bug fixes; new example
Bug fixes; new example
3D model texture loading; bug fixes; new demo game
3D rotation improvements; bug fixes
3D rotation; Billboard behavior; Tween updates & more
3D model stretch mode; 3D editor improvements; bug fixes
3D editor improvements; export to folder; CGS improvements & more