The long-awaited convertible version of BMW's current 3-series will sport its first hardtop. Powerplants and badges will mirror those of its fixed-roof coupe sibling: the 328i will use a 230-hp, 3.0-liter I-6, and the 335i gets a 300-hp, twin-turbo version of the same engine. We'll get to drive it in early 2007.