AT&T "enhances" its two unlimited plans, has special deals for those in NYC, Chicago and L.A.

AT&T is adding two new unlimited plans starting on March 1st. Unlimited Plus Enhanced is $80 a month for the first line, comes with 15GB a month of mobile hotspot data for each line, and also includes HBO. The price is $10 a month less than the currently offered AT&T Unlimited Plus, and includes 50% more mobile hotspot data. Unlimited Choice Enhanced is only $40/month a line for unlimited 4G LTE data, and also includes HBO. Pick either one of the two Enhanced plans and you'll receive a $15 "loyalty credit" that can be used to lower the cost of certain AT&T video services.

The ...