When the new 7-series goes on sale in late 2009, those suspicions will be confirmed.
During a recent Bimmer-hunting expedition at the Nurburgring, ace photog Hans Lehmann was able to procure a shot of the engine bay of a development mule for the 2010 BMW 7-series. When inspecting the layout, he noticed two intercoolers, and the best guess now is that the V8 fitted to the new 7-series could be the same engine employed in the new M3. With over 400 horsepower on tap in naturally-aspirated guise, it's not a stretch to think that this blown motor could produce upwards of 500 HP with limited tweaking. M7 anyone?