Strong rumours that us OMAA APP controllers will be moving across to the SZC.
'twas once a plan of the 'Notso Great Dane'.
Since his departure not sure how the time scale has slipped but would expect it to happen eventually, but not in the immediate future.
Centralised APP/ACC has been the way for the last 20+ yrs but the move back to decentralised APP is starting to gather a small momentum.
Can't really see Dubai giving up any of its' autonomy unless it has more say in procedures, airspace planning, etc. Abu Dhabs perhaps but a big perhaps for the same reasons.