A few years ago BMW stopped to name their cars after the engine displacement and opted to choose "comparable power output and performance".
So this is where it start's the get weird. An i440 therefor should be closer to a 440i - which doesn't exist. I believe they are still not sure on how to position the i4 in the market and how to market these cars. But it's not hard to imagine that there will be a RWD version mit the electric engine of the iX3 (so 286 hp - 210 kW).
In certain magazines BMW seems to communicate the production start of the i4 and 4 Series GC quite offensive.
https://www.automobil-produktion.de/...mitte-376.html
https://www.automobil-industrie.voge...gung-a-974943/