Well, this is just more speculation, but here is my take:

The 335 will run for a year in the coupe before it gets to the sedan. That is a way of limiting BMW's exposure to any new model bugs. Also, the E60 needs the 335 engine more than the E90 does, so look for it there.

The 323 that we got in Canada this year will make it to the US this coming year. No way that this is too many models, check out how many variants are available in the rest of the world.

The 325/330 will combine into the 328 this coming year. Pure guesswork here. It could take a year for this to happen to the sedan, until the 335 engine is in full production.

No one should own the first year of the 335. Those who haven't learned from history are doomed to repeat it.

Skip the CPO E46 M3. Yes, a great car, but it is now dated. It is going to get more dated.

Finally, even if the 330 disappears, it doesn't matter if you have one of the last of the 330s if you are leasing it. Great car, great engine. Someone else's depreciation problem. Available now. Buy it now.

Jeff

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue