While BMW's next 5 Series won't appear until early next decade, technical details are leaking out. Codenamed F10, the 2011 5 Series will feature engines based on the new turbo range. (Note: The present-generation car is pictured). There's a 3.0-liter twin-turbo inline-six in the 540i, a 4.4-liter twin-turbo V-8 in the 550i, and a twin-turbo clean diesel. Even the M5 will switch from the ultra-high-revving V-10 to a turbo V-8, we hear. Hybrids will likely be available as both full dual-mode and mild types, depending on how they're received in the upcoming X6 and 7 Series hybrids.