Guys there's nothing new about the 323i.
We have it here in Canada. It uses a 2.5L I6 making 174 horses at @ 5800rpm and 170 torque @ 3500rpm.
It does 100km/h in 8.9 with Steptronic and 8.0 with a stick.
It's $5000 cheaper than the 325i, and I guess it's a good deal.
It only comes with leatherette interior.
I think the most probable lineup is 323i / 330i / 335i
I think that the 325i "deserves" to get killed most because it's just too close to the 330i in terms of power and features. The horsepower "space" between the models would be more appropriate.
323i = 174hp
330i = 255hp
335i = 300hp
M3 = 400hp
You see here, that with my schematic, we would be getting a linear 50 horse increase with every normal model. The M3, of course, is much more powerful, as M cars should be.