So far, the 'rumours' are:
All Jumeirah based villas to be evicted, along with Silicon Oasis and the all the Sheikh Ahmed owned villas in Safa. Also the Wasl Sq villas owned by Meraas.
In reality that's got to be at least 700-800 villas. There will only be 528 Meydan villas in the next few years and those will also be for new joiners.
So therefore unless EK can suddenly find a whole vacant estate to fill with all these evictees then I doubt EVERYONE will be kicked out. Naturally those in the smaller more expensive housing plots of 7-8 villas down in Satwa and Suqueim may be at a slightly higher risk as they are owned by private landlords and not the royal family.
Of course the relocation and housing shortage problem could easily be solved by combining 2-3 families in one 3-bed villa... The first one to suggest this to the accommodation department gets a Najm award and a mention in Safar magazine. For your own safety your face will be pixelated out on the picture.