BMW is planning to get back on the track with arch-rivals Mercedes-Benz and Audi for the 2012 motorsport season, after an 18-year hiatus.  Wagner BMW of Shrewsbury has been eager to see what the Bavarian automaker will bring to the table since they first announced their highly-anticipated return last year. Next month is when we can expect to get a little glimpse to what BMW has in store.

BMW is planning to unveil their new M3 DTM concept for the first time at Munich's Olympic Stadium on July 16-17. While it is still in its concept form and will…