We already know T-Mobile is planning to release the Galaxy Note 3 and Galaxy Gear on October 2nd. If you just can't wait to make your intentions known, you only have to wait until September 18th. That's when preorders for the Note 3 go live on T-Mobile's site.
T-Mobile doesn't do subsidies anymore, instead preferring payment plans. However, the Note 3 is still going to take a bite out of your bank account.