Most people who are serious about the game are going to use a custom playbook, so even if you could see the default "style" label for the book I agree with the previous poster that it wouldn't necessarily mean anything. There really wasn't an advantage to seeing anything on the loading screen for '11 either, considering that by the time you're at the loading screen your own playbook is locked in anyway.

When my OD restarts for '12, I'm going to have anyone who uses a custom playbook post the formation names and number of plays per formation for the book. At least this way, users will know generally what kind of looks they might face, and it reflects a compromise between not knowing anything at all about an opponent's offense (which is completely unrealistic compared to real life), and knowing too much (like, knowing specific plays in the book, which is also somewhat unrealistic because IRL you'd know the plays that have been run in the past, but not ALL the plays in the book).