The Synology install package was generated by @crieke initially as another forum user just helping out other forum users. As far as I know, Synology had nothing to do with the Roon app. But, I poked Christopher above and he might pop in and give the specific info.
The below is cut/pasted from the Roon NAS FAQ:
This project was a collaboration between the Roon Team and a member of the Roon community: Chris Rieke!
Chris had started working on the Synology version of Roon Server on his own, so we contacted him and arranged to work together on these projects. Chris will be involved in the maintenance and support for both of these NAS packages in the future.
Roon Server for QNAP can be installed from the QNAP App Center (under " Entertainment "). Download links for the Synology version of Roon Server, as well as detailed installation instructions can be found on his site.