Many Sprint Premier Customers are receiving an email today from Sprint stating that they will “serve up something big” tomorrow. Giving away no details in the email we have reason to believe that the guys over at Gizmodo are on to something with the theory of a program called “Sprint Any Mobile.”

From the name you can pretty much figure it out, “Sprint Any Mobile” is supposedly going to make any mobile-to-mobile calling free rather than the usual Sprint-to-Sprint unlimited calling currently offered to customers. Given the fact that most people today use their mobile phones as a primary phone this opens the door to virtually having unlimited minutes.

We won’t know any details for sure till tomorrow. Here is the body of the email for those who have not been able to see it:

We’re about to serve up something big.

And you’ll be among the first to know.

As a Sprint Premier customer, we want you to be among the first of our loyal customers to know about some exciting news coming soon.

In the past, we’ve brought you Simply Everything (SM), Right Plan Promise and ReadyNow. Sprint is ready to change the game once again.

So look for the big announcement in your Sprint Connection newsletter tomorrow morning and take your place in the wireless revolution.

You can also find out more tomorrow by simply logging onto My Sprint.

And be sure to checkout the “Sprint Premier account alerts” at the top of the page