New Mac Computers?

What do you think about there being a new mac updates at the "Back to Mac" event on the 20th of October? There has been some speculation, especially with the logo, posted below:

Do you think Apple will announce Mac OS X version 7; Lion? Look behind the apple logo in the photo. Do you think we'll see a new MacBook Air? What other things do you think we'll see. Post a comment below.