Provided the forum is correct, though, there's some juicy information here. Production is allegedly slated for late fall 2015, with deliveries likely starting in early 2016. The new sports coupe should arrive with 365 to 375 horsepower, courtesy of an upgraded version of BMW's N55 turbocharged, 3.0-liter inline-six.
The report claims BMW also considered a modified version of the 2.0-liter, turbocharged four-cylinder found in the Mini Cooper S. That engine, known internally as the B48, would have been called the S48 for M2 duty, a significance that we're sure BMW purists would appreciate (the only BMW four-cylinder engine to wear an S designation was the four-cylinder from the legendary E30 M3).
The juiciest tip, though, is the M2's internal code-name – pyrat2. According to the post, "pyrat" was the code-name for the 1 Series M Coupe. If this is correct, then, we're almost certainly looking at a clear successor to the limited-run 1M Coupe. Unlike that car, though, the M2 is likely to be part of a far more standard production run, not just a one-year proposition.
This is all pretty great news. Take your prescribed grains of salt, and then hop into Comments and let us know what you think.