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.
New Storage Cleanup dialog; Timelines & Tilemap updates; some scripting improvements; bug fixes
No more project file grouping; various other changes
Improvements to auto-tiling; more usability improvements; bug fixes
Event sheet animations; new framerate mode property; improved theme performance; lots of bug fixes
Mobile app ratings, editor performance improvements, various additions and fixes
Auto-tiling, usability improvements & lots more
Some last bug fixes before stable release
Bug fixes
New timeline examples; mobile export updates; scripting updates
Experimental local file saving; timeline updates; bug fixes