Looks like BMW is soon ready to unveil the BMW 3-Series GT as two undisguised models were spotted during a photoshoot somewhere in the States.
The 3 Series GT is taller, has a new window line and new tail lights when compared to the standard 3 Series. It also has a new tailgate system, which is very likely a two-piece just like on the larger 5GT. Basically you can open the whole hatchback or just the trunk portion.
The engine range will be very similar if not identical to the standard 3 Series. World debut is very likely in early 2013 at the Detroit Auto Show.