The AAC did not take up FRI3 but held a right to revisit - which it attempted. The application was met with some reservation from the other services though and ultimately led to a delay and rewrite of the original submission which is now heavily diluted.
FIR is being used to address statistic based exit points, hence large number of DE officers have become eligible, a spattering of LE aircrew and a few SNCO aircrew.
Not sure what the uptake will be from cohorts who were planning to leave, but certainly career officers identified and eligiblre will be saying thank you very much.