ICS2 Release 3 will be introduced in steps (depending on the type of traffic) starting on 3 June 2024

ICS2_Releases_1-3_Picture

Important information about Release 3

https://bazg.admin.ch/content/bazg/en/home/informationen-firmen/verbote-beschraenkungen-und-auflagen/sicherheit/ics2/ics2-release-3.html