As recently updated in the
future BMW models info preview thread:
BMW i4 is not going to be built from the ground up as a BEV.
Instead, it will be one of the versions of G26 (the next 4GC), similar to the recently introduced iX3, though hopefully with better performance. It will start as a RWD or AWD with 80kWh battery. If you want a clean sheet BEV, you'll have to wait for the I20.
How closely the iNext concept reflects that future production car remains to be seen. Both i4 and I20 should be expected around 2021. In other words, I can confirm the AutoExpress report here:
https://www.autoexpress.co.uk/bmw/10...stream-in-2021