The participants list should/ will be released during the press conference held on 14 January.
For now the following head's of state have confirmed : Argentina, Panama, South Africa, Poland, Vietnam and PM of Thailand.
For those who are in the area, according to my knwoledge the following government aircraft should currently be stored/ in maintenance/ for sale at LFSB/Basle: A9C-HMH, TJ-AAW???, TR-KSP, 678 (HAF) UP-A3001, 9K-GAA??, 5A-ONE, 5T-ONE, 5N-FGT, 557 (SOAF), A7-AAG, A7-HHF, HZ-101, HZ-102, HZ-HMS2, YU-BNA.
Hope to see reports from Basle confirming these.
Regards Pieter,