According to this article and chariman of the board at BMW M GmbH, Friedrich Nitschke, the M2 will be powered by an all new engine codenamed S57 B30 and will produce 400hp. According to him, that's the "magic number". This contradicts what we've been hearing all along doesn't it? Which engine will it be?
http://www.worldcarfans.com/11410238...-engine-for-m2