This render is originally from April 2022, quite a few months before any next gen BMW X3 photos appeared and before any news about the new X4 turning into an iX4, or whatever it will be.
The design influences were mostly the new XM, mainly the concept and production model. There are some influences from the new 7 and upcoming 5. I really like how this turned out, but the actual car won't be like this, so ya. Enjoy.