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.
Scripting autocomplete updates; plugin updates; bug fixes
Candidate for stable release
Fix effects regression
Minification support for scripting; bug fixes
More timeline updates; fixes and optimisations
Timeline & scripting updates; lots of bug fixes
Lots of additions and bug fixes
New additions, scripting updates, lots of bug fixes, and more
Some final bug fixes
Updates for iOS & Android apps; fixed regression