Frunobulax,
In Oz, any new procedure, airspace, change, whatever must always be subject to a TNA. TNA = Training Needs Analysis.
A TNA would be done to decide what training is needed by controllers to go from the old to the new.
As an ATC Instructor, looking at the brief details you have posted, I would hazard an opinion that at the very least a period of simulation would be involved especially if,
Following these changes there'll be completely new approach procedures
and your
ATC environment is about to be completely changed in few months time
.
DP