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.
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
More bug fixes
More bug fixes; new examples; documentation updates