BMW M3 prototypes have been spotted under test every now and then for the last few months, but always with the front end covered with a black vinyl “bra” or other covering to hide the car from view.

Now these latest photos, taken just recently in the US southwest, capture an M3 Coupe as it undergoes high-temperature testing. For most test driving conditions the prototype still has the front end covered, but for some testing the disguise needs to be removed, giving our spy photographer the opportunity for a clear look (and clear photos) of the M3’s bold front end design.

One can also note the four exhaust pipes and wider fenders that distinguish the M3 from other 3-Series odels.

The powerful M-version of BMW’s 3-Series is scheduled for launch next year only. The 3-Series M will be available initially as coupe, and later as convertible and four-door.

For the first time power will come from a V8 powerplant, derived from the M5 and M6. It is a 4.0 litre engine delivering 415 HP. Transmission is a seven-speed SMG gearbox. A traditional six speed manual transmission will be offered as an option.

Arriving in US showrooms this September, the newest BMW Coupe once again sets the standard for design, luxury, and performance in its class. The 2007 3 Series Coupe will have a starting MSRP of $35,995 including destination and handling.

As is typical for BMW, significant enhancements to the standard features as well as the value of the new 328i and 335i have been made, compared to their predecessors. In addition, BMW's xDrive all-wheel drive will be available for the first time in a Coupe in the 328xi. While base prices have increased versus the outgoing versions, the new 3 Series Coupe models now include a substantial number of additional features including:

More powerful engines (230 and 300 hp vs. 184 and 225)
More differentiated styling from the sedan
Xenon adaptive headlights with cornering lights standard
Rear side head protection system (airbag curtain)
Enhanced DSC benefits (including brake drying, brake stand-by, brake fade compensation, and start-off assistant)
Enhanced interior ambiance lighting
Run-flat tires with Tire Pressure Monitor

The 328i also receives the following additional standard equipment:

17" wheels and tires
6-speed manual transmission
In fact, compared to the top-of-the-line 2006 330Ci Coupe, the entry-level 2007 328i Coupe not only offers greater style inside and out, as well as a number of safety enhancements, it also offers even better performance - all for $2,500 less.

The list of options for all models now includes a six-speed STEPTRONIC automatic transmission. Option packages for both models represent even greater value with added content as well.

Ownership value has been enhanced with the announcement of BMW Ultimate ServiceTM , a suite of services that includes the BMW Maintenance Program (formerly called Full Maintenance) , Roadside Assistance, the New Vehicle Limited Warranty and BMW AssistTM with Teleservice. The new 3 Series Coupes will have BMW AssistTM available as a stand-alone option or as part of the optional Premium Package. As before, included with BMW AssistTM is Bluetooth hands-free phone connectively which includes hands-free access to your phonebook. Starting with model year 2007, BMW AssistTM will be provided for four years. Most other similar services cover only the first year of service.

The 2007 BMW 328i Coupe will be priced at $35,995 while the 335i Coupe, with its 300 horsepower twin-turbo inline six cylinder engine, will have an MSRP of $41,295. The new 328xi Coupe, with BMW's advanced xDrive all-wheel drive system, will retail for $37,795. All prices include a $695 destination and handling charge.

I don't recall driving a more balanced machine. The power from this engine is so smooth and so substantial, that you feel any passing or accelerating manoeuvre is within its ability. The reserves of torque are diesel-like, with maximum numbers available from a very low 1,300 rpm all the way to 5,000 rpm

Likewise the interior is a model of luxury and functionality. Its designer, Hans Osada, came to BMW from Audi five years ago and clearly brings with him a special appreciation of materials, fit, finish and appearance.