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.
Media playback updates, more bug fixes
More fixes for Safari
Improved support for Firefox and Safari
Experimental support for iOS 11!
Even more bug fixes, and bracket highlighting in parameters
Lots of bug fixes
Firefox support, Xbox Live leaderboards, updated data editors
Extended 'Find all references', 'Go to function' and more
Some language updates and more bug fixes
French translation, rgbEx expression, lots of bug fixes