I just received an email from Bank of America regarding the 3% category for my Cash Rewards credit card.
Starting January 14th, customers will be able to choose the 3% cash back category (normally just gas stations right now) from a variety of categories. It can be changed to different categories on a monthly basis. Category options include Gas, Online shopping, Dining, Travel, Drug stores, Home Improvement/Furnishings. This is a pretty awesome change!