While we had plenty of indication this would see a formal announcement today, T-Mobile has gone and made it official. Announcing via Twitter the addition of the $39.99 2GB Mobile Broadband plan to their data lineup. As a reminder the $39.99 plan receives an additional 20% off is added to an existing voice account. T-Mobile links to their Mobile Broadband page via Twitter but as of this writing, the $39.99 plan isn’t listed yet.

@tmobile