There have been at least a handful of threads asking about T-mobile Note 4 bands, instead of trying to find them all and updating them separately, here is what is listed by TMO.
Quad Band GSM; UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850); LTE: 1, 2, 3, 4, 5, 7, 8, 17
No band 12 listed.
The pre-order page went live earlier (wasn't supposed to be until at 9am PST).
Samsung Galaxy Note 4 Phablet Superphone | Galaxy Note 4 | T-Mobile
Quad Band GSM; UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850); LTE: 1, 2, 3, 4, 5, 7, 8, 17
No band 12 listed.
The pre-order page went live earlier (wasn't supposed to be until at 9am PST).
Samsung Galaxy Note 4 Phablet Superphone | Galaxy Note 4 | T-Mobile