Archicad 28 arrives this year, and along with it a new API Devkit. The Technology Preview Devkit allows you to start updating your add-ons for seamless compatibility upon the actual release.
Major changes from Archicad 27 (details in the New Features Guide of the API devkit - part of the devkit package):
- Fundamental built-in properties are no longer accessible. Use their user-defined equivalents instead.
- Library Management and Library Part APIs have been revamped. Please switch to the newer set of functions.
- API modernization continues.
- GS::HashTable keys and values became references. Please check your iterations.