What's new for 2008
All models:
• New model facelift includes revised front fascia, new taillights, new rear air-diffuser (Sedan models) and redesigned interior with upgraded materials. All 6-cylinder Sedans and Sports Wagon receive significant power increases, comparable to 3 Series cars.
• Lane Departure Warning system boosts driver awareness by providing the driver an immediate warning about lane placement
• Active Cruise Control adds "Stop & Go" feature, which permits cruise-control operation even in heavy traffic
• Freshened interior provides an even more elegant look, with additional leather and extended wood trim.
• Ergonomic changes include more convenient window switches, relocated console ashtray and electronic shifter
• In addition, standard iDrive adds six programmable memory buttons, which can be used for anything from radio station presets to navigation destinations or auto-dial telephone numbers
• Premium Sound Package discontinued; Logic7 premium stereo available as stand-alone option. BMW center-installed 6-disc CD changer also available
All 5 Series Sedans
• Reconfigured optical headlight lenses

• New front airdam has reshaped opening with upturned ends
• Relocated amber DOT lenses; headlight area is completely white

• Taillights include new white design with fewer reflectors, plus red lines in the optical lenses

• Reshaped rear bumper, with revised diffuser below the bumper
Performance & efficiency
All 5 Series models:
• Technically updated STEPTRONIC includes faster shifting and more efficient operation for improved efficiency and quicker acceleration; now a no-cost option for 2008
• New electronic shifter, similar to that featured in the X5 SAV, offers "shift-by-wire" actuation and more ergonomic operation
• SMG no longer available
535i/xi Models
300-hp N54 for all 535i/xi models:
• all-aluminum construction w/cast-iron cylinder liners
• twin-turbocharger technology boosts horsepower with virtually no turbo-lag
• Direct fuel injection with piezo electric injectors
• Double VANOS 1 steplessly variable valve timing
• N54 engine rated at 300 horsepower @ 5800 rpm, 300 lb-ft. of torque at 1400-5000 rpm, an increase of 45 horsepower and an astonishing 80 lb-ft. of torque over previous 530i/xi, with a significantly broader torque band.
• Brake discs upgraded to 13.7 front and 13.6 rear, same size as 550i
535xi Sedan
• 535xi Sport Package offers the additional option of 18-inch wheel and tire sizes in staggered width; first time on all-wheel-drive models
Options
• Active Cruise Control with Stop & Go feature allows operation even in traffic, and can accommodate speeds all the way down to a complete stop, and resume to set speed from 0 mph
• Lane Departure Warning system, provides an immediate but discreet notification when the car crosses into another lane without turn signals
• USB adaptor for iPods or MP3 players, which does not use the CD changer connections
• Premium Sound Package discontinued; Logic7 premium stereo and 6-disc CD-changer available separately
• Sequential Manual Gearbox discontinued
Other highlights
All models
• BMW Ultimate Service, including BMW Maintenance Program, for 4 years/50,000 miles included in base price
• Standard 6-speed manual transmissions have self-adjusting clutch for long clutch life
• Aluminum suspension system for outstanding handling and riding comfort (528xi and 535xi models: aluminum rear suspension only)
• Aluminum front-end structure – contributes to weight reduction and optimum front/rear weight distribution
• Vehicle and Key Memory allows users to personalize many electronic comfort, convenience and security features
• Leather-covered 3-spoke power tilt/telescopic steering wheel with auto tilt-up for entry/exit, multi-function controls
• BMW Ambiance Lighting: LED lights in roof bathe console area in soft orange light, helping occupants find controls at night; enhanced lighting features included in Premium Package
• All models available with Sport Package and Cold Weather Package; all 6-cylinder models also available with Premium Package
• Wide range of stand-alone options includes Active Cruise Control with Stop & Go feature (automatic transmission only), Active Steering, Park Distance Control (standard 550i Sedan), alternate wood interior trim selections, 20-way front Multi-contour seats, split folding rear seats (Sedan models; standard Sports Wagon), heated rear seats, BMW On-board Navigation System, Head-up Display, Lane Departure Warning system, Night Vision, SIRIUS Satellite Radio, HD Radio, rear window- and/or rear door-window sunshades, rear-seat side-impact airbags
• 10-way power front seats standard in all models; 20-way Multi-contour seats in Sport Package or as a stand-alone option; 4-way power front-seat lumbar support with 528i/xi Premium Package, standard in 535i/xi models and 550i
• Memory system for driver's seat, steering wheel and exterior mirrors; 2 positions for each user (captured by Key Memory)
• 1-touch operation of all side windows and moonroof
• Body structure engineered for excellent occupant protection in full and offset frontal impacts, side impacts and rear impacts
• Front-seat safety belts with automatic tensioners and force limiters
• Front and rear Head Protection System (AHPS II) standard in all models
• Front-seat side-impact airbags standard in all models
• Rear-seat side-impact airbags optional in all models
• Battery Safety Terminal – after a severe impact, severs high-current connection between battery and starter cable to help prevent possible short circuit
• BMW Assist Safety Plan with 4 year membership standard equipment
For HD radio stations, Canada is part of a test group at the moment, but USA has thousands,
http://www.ibiquity.com/hd_radio/hdradio_find_a_stationFrom the info I read, Canada might be using a different system then the USA, but as far the info I read nothing is confirmed as to what system Canada will use.