From IFALPA, the next in series of updated Safety Bulletins (it's the first following August 31 unless one has been missed).
Link:
update-21sab146-kabul-fir-updated-information.pdf (ifalpa.org)
It will be -- or at least it could be -- interesting to see what organizational initiatives ICAO undertakes or what changes it makes in the aftermath of all this. That is, under a heading of, What Lessons Learned Are There from the Kabul FIR Contingency Coordination Team (CCT) Effort? To the observations of this SLF/attorney it doesn't appear that the work of this CCT has been either routine or just an implementation of existing procedures documented in the volumes of information published by ICAO. Perhaps, even, this subject will be up for discussion at the imminent next meeting of ICAO's Council??