@jcpowermac @Krist
Please kindly note, Eurail/Interrail is fully covering the aforementioned lines starting from 01 January 2024. As a result, currently, you still have to purchase a ticket at 75% of a full fare ticket.
For historical reasons, amendments to tourist offers become effective by the end of a year and not with the annual timetable change in the beginning of December. This also explains why the change has not been officially communicated to all staff of Swiss public transport companies, and Eurail is still stating the 25% reduction on their website.
Same with Swiss Travel Offers, their ticket prices will also be amended on 1st of January 2024, and not on 10 December 2023.
Kind regards,
Roland