From the
BMW future model info thread:
G20/G21 refresh is disappointing. Yes, it will have the new dash and some exterior and interior changes. However, the powertrains will remain the same across the board, with the lonely (and pretty much irrelevant) exception of Euro-only Alpina B3 bumping the power to 490hp.
The models for G20/G21 LCI and two new G26 models are now:
G20 LCI:
318i, 320i, 320ix, 330i, 330ix, M340i, M340ix, 320e, 330e, 330ex, 316d, 318d, 320d, 320dx, 330d, 330dx, M340dx, Alpina B3, Alpina D3S
G21 LCI:
318i, 320i, 320ix, 330i, 330ix, M340ix, 320e, 330e, 330ex, 316d, 318d, 320d, 320dx, 330d, 330dx, M340dx, Alpina B3, Alpina D3S
G26:
430dx, M440i
Related thread: G20 3 Series LCI Facelift Leaked (Photos)