Best Buy has put the MacBook Pro on sale: $100 off every model. If that's not the clearest sign that the next generation MacBook Pro 2012 is around the corner—perhaps WWDC 2012 on June 11—I don't know what is.
Most probably, the new beasts will have a new design with Retina-ish displays powered by Nvidia graphics and USB 3.0. Here are some of our MacBook Pro 2012 predictions/rumors/wishlist. [Thanks Sam Geiger!]