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.
More bug fixes
Some extra fixes for r135
New procedural terrain demo; more Instant Games updates; lots of bug fixes
Instant Games updates; new Playable Ads exporter; bug fixes
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