With DSM 7.0, Synology decided to further increase security for packages. The complete guide can be found here:
https://www.synology.com/de-de/support/developer#tool
To help developers finding their way and starting quickly with the RC now available, TosoBoso provided a Demo package which contains all necessary changes for DSM 7. Big thank you to TosoBoso!
If developers have any further questions, please contact us.