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 examples, mesh editor improvements, bug fixes
New examples, touch/pen input improvements, lots of bug fixes
More bug fixes
Bug fixes
New examples; Cordova updates; bug fixes
Bug fixes; pen updates; more JavaScript features
More new examples; bug fixes
Mesh editor; new examples; bug fixes
Hotfix for r227
Updated minifier; scripting improvements; other changes and fixes