There were a few teasers, but it looks like Republic Wireless is launching today (11/8/2011) with its fairly revolutionary cellular plan.

You get:

• Mostly unlimited talk, text, and data for $19 a month.
• No contract.
• $199 initial cost which ships you a LG Optimus S Android smartphone.

The Optimus S you get has been modified to seamlessly use WiFi whenever it is connected, switching to Sprint's cellular network as a fallback when you are not. What's the catch? You have to conform to a certain, but common, user profile where you are connected to WiFi most of the time. Apparently the cut off point where Republic starts sending you concerned correspondence is some combination of 550 minutes, 150 texts, and 300 megabytes of data used on the cellular network. Anything you use while on WiFi anywhere in the world *is*, however, truly unlimited.

If you're around WiFi more than cellular networks, like Alice and I, this might just be a great deal.

http://republicwireless.com/