Perhaps the best thing we can say about the next 5GT is that it won't be quite so hunchbacked. The seven images provided by our spy photographer show a car with a profile that's far more svelte than the bulbous entry on offer today. The roofline, in particular, is more aggressively raked at the rear and there's a proper, distinguished rear deck, as well. Part of what makes today's 5 Series GT look so bizarre is the combination of an almost fastback tail with a very tall decklid height. While the updated model still features that high rear – you can actually see where the beltline kicks up at the rear quarter window – the fastback styling has been softened so that it doesn't look quite so bizarre.
The new Gran Turismo should also be a much better steer than the 5GT currently on offer. Our spies report that this next-gen model will be significantly lighter, which is something we can always get behind. Engine options will consist of gas, diesel, hybrid, and plug-in hybrid, as is the trend, although specifics aren't quite available yet.
Spitballing, though, it's almost a guarantee that the next 5GT will share the 5 Series sedan's engine lineup. Expect a number of carryover engines there – 2.0-liter turbo four, 3.0-liter turbo six, 4.4-liter twin-turbo V8, and 3.0-liter diesel, probably – along with a plug-in hybrid option, although nothing's been confirmed so far. With an official debut slated for late next year, either Paris or Los Angeles seem like a logical debut location.