Both the old and new systems use green lights to indicate available spaces. So the new garage may already be the new system.I want to second @dhsxlop post. I too drove by the third garage last night from I-4. You could clearly see the overhead green light parking indicator so apparently it does have the same system as the other two garages.
The vendor for the first two garages did say they were surprised to hear that it was not going to. So very odd. The system is being used as recently as last week. I wonder what the new system will be in the orange garage or if they're just fixing the current system?