I can only speak for one carrier, and the answer as of this moment is no. Pretty much everyone is struggling to meet the FCCs aggressive timelines and do interoperability testing with each other. After that is done, maybe. I'm sure the FCC has upcoming requirements based on this, but to my knowledge those aren't out yet. If the FCC doesn't make additional requirements, then it will depend on the carrier's decision. I'm under the assumption that they will introduce those additional requirements though.