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.
Hotfix for r138
Experimental Timelines feature; new Binary Data plugin; lots more
Project Bar search, new Orbit behavior, custom tab colors and more
Further bug fixes
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.