AT&T 4G support

Are there currently any AT&T (US) 4G LTE modems supported on the Pepwave Max 600? All I see are 3G modems on the compatible modems page.

Hi Jason,

We are working on supporting LTE on the U313 modem, please stay tuned.

Is there a way I can get on a mailing list so that when you do get support that I am notified? I want to get something deployed as soon as possible. If I can get one of these and give your programmers remote access, will that help speed things up?