AT&T has deployed commercial LTE-Licensed Assisted Access (LTE-LAA) in downtown Indianapolis.
The Samsung Galaxy Note8 supports LTE-LAA.
AT&T describes LTE-LAA as a stepping stone to 5G, which it aims to commercialize as early as late 2018. The progression includes upgrading cell towers with 5G Evolution technologies like 256 QAM, 4×4 MIMO and 3-way carrier aggregation.