Well that was fast. Just hours after Verizon Wireless and AT&T announced unlimited voice plans today, T-Mobile upped the ante. I just spoke with a T-Mobile spokesperon who told me, “to help our customers stick together with those who matter most, and to provide the utmost value to our customers, T-Mobile today is announcing a new rate plan featuring unlimited voice and unlimited messaging for just $99.99. This offer will be available beginning Thursday, February 21st.”

Verizon Wireless and AT&T, care to up the ante?