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.
Bug fixes
New Z elevation feature! Plus new template, performance improvements and more.
Last round of bug fixes (hopefully)
New Platform Info conditions; bug fixes
More bug fixes
More bug fixes; new examples; documentation updates
Loads of bug fixes
New examples, and lots of bug fixes
Bug fixes for r123