ÖBB have today published their new Timetable from 11 December 2022 to 09 December 2023.
For the moment I found this new things:
Nightjet services Vienna/Munich to Milan will go till Genova.
Nightjet Munich-Venice and Euronight Munich-Budapest will start in Stuttgart. Same for EN to Zagreb and Rijeka.
Euronight Zürich-Prague one train like this year via Salzburg and Linz and the other new service via Leipzig and Dresden.
Nightjet Zürich-Hamburg/Berlin run not more together, but at different times.