From MINI2, 16th May:
http://www.mini2.com/news/news.php?id=123
Yes it will be tweaked for 'performance and fit' and t's not a 1.5 litre engine, it's a 1.4 litre engine!
So they've said nothing new there, just put a picture of the MINI with a bendy tail pipe. (I don't find those half as interesting as early MINI, and MINI Cooper S spy shots were somehow!).