Layoffs should be driven by lack of work, and that's it. This whole idea that AT&T is teaming with idle workers that can be laid off on a whim - if true - would be gross mismanagement.
That said, there is some news regarding wireline.
https://www.lightreading.com/broadband/fttx/atandt-fiber-gains-accelerate-as-problems-at-wireline-biz-unit-mount/d/d-id/779156?
"Revenues shrink as the company puts a stopper on certain legacy voice and data services, including VPN services, and faces a reallocation of government spending away from some of those services.
As such, AT&T is pressing ahead with a plan to "reposition the asset," AT&T CEO John Stankey said"
As revenues shrink, so does the need for as many employees to support wireline. I think "reposition" will include layoffs or outsourcing. But, absent that business unit, I see incremental layoffs driven by automation and real estate consolidation.