Saudi Arabia 2020

Does anybody know which jobs are likely to be affected by the Saudi 2020 nationalisation?
The info I have read just states Government and Public sectors. 
My wife was/ is hoping to join me from the UK in about 12 months time as a Nurse but seems pointless depending on the plan for Expats in Saudi Arabia.
I am currently in Engineering and am not sure how this will affect my situation also.

Any advise would be appreciated.

We are in Saudi means we are living in the different world. Anything can change any time, any rule can come any time and any rule can dismissed anytime. so keep hope for the best and just wait and watch and do whatever you are planning.

What is published in the news is an announcement, a plan.

Saudi Arabia:
The country that teach you Life is a Must ! Daily you find some new challenge! Changes every time bring you a positive message if you discover the power on it, if you have faith and if you like personal challenges... The most important issue is Don't forget the connection between you and The power of infinite love & gratitude: God cause, here you only have one choice: Be strong.!