BMW doesn't have any concrete plans when it comes to providing specs or innovations for a new electric vehicle line up. The all electric model will not even debut until at least 2021. They will fall behind in the field as most of the major players are already on board with plans to release all electric in the next 2 to 3 years
BMW has made mention on the new all electric to be called iNext. A big rumor has it that it is the electric crossover, SUV version on the i5 and will complete with Teslas Model 3
They have release rendered versions of what the car will look like already last year and it looks to be a bit larger than the standard BMW and they have hinted they may be using solid state batteries.