BMW unwraps redesigned 3-Series sedans in fall 2005. Sources see U.S. sales underway by January 2006. Updated wagons are expected about six months after that. New-generation coupes and convertibles are due by fall of '06 and will be badged 4-Series in line with BMW's new policy of labelling sportier models with even numbers. The new 3s and 4s will follow the latest 5-Series in making heavy use of aluminum construction to offset larger dimensions. Wheelbase reportedly grows to 108.7 inches, overall length to 177, width to 69.7. U.S. models will still rely on inline 6-cyl engines, but should gain power and efficiency from BMW's latest variable valve-timing and valve-lift controls--and perhaps more displacement. Transmissions are said to comprise conventional and SMT 6-speed manuals and a new 6-speed automatic. A 3.6-liter V8 should provide around 270 hp for high-performance M4 models and an M3 sedan, which likely won't appear until mid-2007. BMW is also said to be working up a turbocharged six to plug the power gap between mainstream and M models. BMW's xDrive AWD should be available a year or so after the new lines debut. All models reportedly get "by-wire" electrohydraulic brakes and and a class-appropriate version of BMW's controversial iDrive control system. Sport Package options should include BMW's Active Steering, as on the 5-Series. Spy photos of little-disguised prototypes confirm more conservative styling than on the 5- and 7-Series, though it's obviously in the same mold. The 4s are expected to be more sharply differentiated than today's coupes and convertibles--think 6-Series vs. 5-Series. One source says a high-body crossover wagon with rear- and AWD may appear by 2007. Meanwhile, BMW is still apparently debating whether to bring over its new 1-series compact. Based partly on 3-Series components, this 4-cyl 4-dr hatchback has made a big splash in Europe, but BMW North America is reportedly concerned about profits given the current weak dollar/strong euro situation--and about possibly diluting the brand's premium image with such a small, relatively simple car in the competitive low-$20,000 market. About the most BMW will say for now is that the 1-Series may come Stateside, but not for 1-2 years at least. More likely for us, say U.S. gossips, are the spinoff 2-Series coupe and convertible, though we likely won't see them until 2007 at the earliest. Stay tuned.