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.
Multiple local previews; usability improvements; bug fixes
Bluetooth plugin; Function Maps; loads of bug fixes
Bezier curve paths; convert functions; User Media recording; loads of bug fixes
New built-in functions; raycasting; visual timelines + more!
Another patch
Patch for r141
Various updates and bug fixes
Loads of bug fixes; more Timeline updates
Timeline updates; more Binary Data integrations; bug fixes
Hotfix for r138