HondaHondaJapan, 1948 > present102 models
2419 photos
10 videos
has released a 39-second audio clip of it testing its 2015 Formula 1 engine. 

The Youtube clips only have audio of the engine, but it certainly sounds good. There should be no concerns about the cars sounding boring next year. 

Honda has confirmed that it is supplying engines to McLarenMcLaren MP4/4 HondaUnited Kingdom, 1988 > present2 photos
3 videos
for the 2015 season, and it says that it has been trying to find other teams to supply to as well.

In 2014, Formula 1 is switching to 1.6-liter turbocharged V6 engines with regenerative braking and electrical regeneration from the engine's heat.