Romanshorn–Zurich Airport–Interlaken Ost.

The IC8 now runs every two hours as the IC81 to Interlaken Ost instead of Brig. This means that passengers from Romanshorn, Zurich Airport and Zurich can now benefit from new direct connections to the Bernese Oberland. The frequency of service between Romanshorn and Valais remains the same; however, at certain hours, a change in Bern will now be required.  

Geneva Airport–Bern–Chur.

There are now two direct connections between Geneva and Chur via Lausanne and Bern on Saturdays and Sundays. This means that, for the first time, it is possible to reach Graubünden directly from French-speaking Switzerland. 

Biel/Bienne–Solothurn–Olten.

SBB is expanding its evening service offer for the S20 between Biel/Bienne and Solothurn. There will now be a midnight service from Biel/Bienne to Solothurn, departing at 23:53 every day. At weekends, the last train from Olten to Solothurn will be extended to Biel/Bienne. As a result, convenient transfer connections will now be available at midnight from Zürich HB, Basel SBB and Lucerne to destinations such as Selzach, Grenchen Süd, Lengnau and Biel/Bienne.

Lenzburg–Lucerne.

As of the timetable change, SBB will serve a new railway station, Seon Nord. The S9 will call at Seon Nord every half hour. 

Brugg AG–Zürich HB–Winterthur–Schaffhausen.

A new early-morning train service will run from Brugg AG to Zürich HB, Winterthur and Schaffhausen, departing at 04:26. 

Bern station.

The tracks at Bern station will have to be taken out of service alternately across the entire timetable year to enable the construction of the new pedestrian underpass. This will result in increased platform changes and limited space on the platforms affected. On several week-ends, there will also be train cancellations and changes to both regional and long-distance services. From 30 January 2023, the IR 66 Bern–Neuchâtel–La Chaux-de-Fonds will depart from Bern earlier on Monday to Friday mornings, at 07:48 (instead of 07:53) and 08:48 (instead of 08:53). It will also serve the S51 stops which are cancelled at 07:48 and 08:48.

Biel/Bienne region.

• Due to work on the overhead power lines, Biel/Bienne station will be closed to rail traffic on the weekends of 30 September / 1 October 2023 and 7 / 8 October 2023. Various train services will not run and will be replaced by buses. 
• Engineering works will also be carried out in the Biel/Bienne region on other weekends, causing various changes to the timetable. 

Bern–Olten–Zurich.

• On the following weekends, SBB will carry out important maintenance work on the high-speed Mattstetten–Rothrist line from Friday evenings until Monday mornings: 24 to 27 March, 13/14 May (only Saturday and Sunday), 2 to 5 June, 8 to 11 September and 27 to 30 October 2023. Long-distance services in both directions will be diverted via Burgdorf (original route), extending journey times by around 10 to 15 minutes. Trains will depart Basel SBB, Olten, Zürich HB and Lucerne earlier and arrive at these stations later. From Bern, trains will run at the usual time in all directions.
  For more information, see: Maintenance on the Rail 2000 line | SBBLink opens in new window.
• Between Mellingen–Heitersberg and Mägenwil, SBB will carry out maintenance work on railway bridges, namely the Fislisbach Viaduct, the Reuss Bridge in Mellingen and the rural road underpass in Wohlenschwil. The tracks will also be replaced at the same time. Due to this work and other engineering works on the Aarau–Zurich line, a reduced service will run on several weekends between April and October 2023.
  For more information, see Maintenance of three railway bridges and renewal of the tracks at Heitersberg East | SBBLink opens in new window.
• From May 2022 to December 2023, SBB will be carrying out work at Wildegg station to improve accessibility. The following weekend closures will take place: 3 to 5 March, 18 to 21 May, 3 and 4 June, 10 and 11 June, 9 and 10 September 2023. Timetable changes may also occur in the evenings.
  For more information, see Wildegg station | SBBLink opens in new window.

Baden–Koblenz–Waldshut.

From Saturday, 1 April 2023 until Sunday, 29 October 2023 (inclusive), the bridge over the Rhine will be closed for a full overhaul. S27 and S36 trains will not run between Koblenz and Waldshut. Replacement bus services will be provided.