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 manual, MP3 support
GPU profiling, new theme, optimisations and more
New IAP plugin
Additions and SDK updates
New Export Manager, updated effects engine, more fixes
Some new additions
Maintenance release with many bug fixes
Updated Dark theme, bug fixes
Supports using accounts offline
Patching a couple more issues in r42