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BMW M4 sheds some camouflage for latest test run

Last time we saw the upcoming BMW M4 out testing, it was heavily clad with camouflage and decidedly homely looking (as most early development mules are). But in this latest set of photos, the M3 coupe successor has started to come into its own skin, and we're seeing a shape more closely akin to that of a rendering we brought you a few months back.
Unsurprisingly, the M4 coupe looks very similar to the 4 Series Concept that BMW debuted at the Detroit Auto Show earlier this year. And while non-M version of the 4er will likely look a bit more sedate, these spy shots clearly show an aggressive front fascia, large wheels and the usual quad-exhaust rounding out the rear end.
Naturally, the M3 sedan will launch before this M4 coupe (and convertible), and powertrain details are still unclear as of this writing. We understand that the current M3's naturally aspirated V8 will be axed in favor of some sort of turbocharged six-cylinder engine, and we've heard plenty of rumors as to what, exactly, it might be, but we have yet to hear any official confirmation.

BMW to change model designations, further yet from actual displacement?

Once upon a time, you could look at the back of a trunk lid of a BMW and come up with a pretty fair idea of what sat under its hood. For example, a 320i was a 3 Series with a fuel-injected, 2.0-liter engine, a 328i was a 3 Series with a fuel-injected, 2.8-liter engine and a 328Ci was a two-door 3 Series with the same engine. Those were good days.
Today, though, that simplicity is dead and gone. A 328i now has a 2.0-liter engine, just like the 320i, while the simple "C" designation that was affixed to two-door models has been replaced with a "4," so we have a 428i and a 435i. It gets worse, though. A 550i uses a 4.4-liter, twin-turbocharged V8 (it should be a 544ti, although we'd be willing to hear an argument for "tti") and a 740i uses a 3.0-liter, turbocharged six-cylinder, which is the same engine found in a 535i. It's madness.
And, well, it's about to get madder, if a post on a BMW enthusiast forum is to be believed. According to f30post.com, we could see a shakeup in at least the 3 and 4 Series nomenclature, thanks to an impending refresh that will see the addition of new, turbocharged four- and six-cylinder engines, codenamed B48 and B58, respectively.

Alpina B3 Bi-Turbo offers Europeans a pre-M3 performance 3er

Anyone that's spent some time behind the wheel of the Alpina B7 probably knows enough to understand what Americans are missing with this, newly launched Alpina B3 Bi-Turbo. We've got no lack of M models to choose from, it's true, but the Alpina touch offers a completely different driving character, with almost as much performance. A pity then that Alpina has no plans that we've heard of to bring this one across the pond.
Filling the gap between the current 3 Series offerings and the outgoing M3 (we're not likely to even see the new M3 and M4 until September's Frankfurt show, nor be able to buy one until after that), the B3 Bi-Turbo brings serious performance to the F30 3er. As the name indicates, two turbochargers are used to force-feed BMW's 3.0-liter inline-six engine, for a total output of 410 horsepower and 442 pound-feet of torque. That power offers a big jump from even the BMW 335i sedan, and will push the B3 to 62 miles per hour in just 4.2 seconds and on to a top speed of 190 miles per hour. Alpina's own sport suspension underpins the thing, while the power is modulated by way of a eight-speed automatic transmission.
The new B3 will be easily recognizable thanks to its "Classic" 20-inch, 20-spoke Alpina wheels, and a rather subtle, aero-enhancing body kit. No pricing has yet been announced, but you will find a host of additional information in the attached Alpina press release below.