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.
Example updates; bug fixes
New examples; bug fixes; SDK updates
Autocomplete for tags; Android update; SDK updates & more
Event variable improvements; scripting/SDK improvements; new examples; bug fixes
SDK updates; new examples; bug fixes & more
Addon SDK v2; better video support; prompt on close & lots more
Templates/hierarchies improvements; bug fixes
Various new additions; image export improvements; scripting improvements & more
New examples; some last bug fixes
More Flowcharts improvements; new examples; bug fixes