As far as the international standards are concerned, the RDS Forum has completed the RDS2 development which it started in 2014.
Important milestones are the C-group type definition and the RDS2 file transfer protocol RFT, both in IEC 62106-2 Ed2 (2021), and the new ODAs Station Logo, Slideshow and Internet Connection, which are all in IEC 62106-6 Ed2 (2023).
The ITU-R Rec BS.643-4 (2022) on RDS was updated to include the RDS2 option and all new references to the restructured RDS standard IEC 62106 (all parts) as it exists since 2018.
Subcarrier extension
The original RDS subcarrier remains the compatibility anchor, with additional capacity available for newer services.
Key milestones
RDS2 development work begins inside the RDS Forum.
C-group type definition and the RDS2 file transfer protocol RFT appear in IEC 62106-2 Ed2.
ITU-R Recommendation BS.643-4 is updated to include the RDS2 option and references to the restructured IEC 62106 standard.
Station Logo, Slideshow, and Internet connection ODAs appear in IEC 62106-6 Ed2.
Reference material
The Radio World published an article on RDS2 in 2019. To get an overview of the development work done by the RDS Forum, this article remains a good reference.
In March 2023 the RDS Forum published Position paper 23-01 on the RDS2 development status, which helps to explain the state of RDS2 development reached by now.