BT decides to stick with the big guys. Alcatel-Nokia and Huawei have been #1 & #2 in DSL for a decade, both with excellent products. They both jumped in early to G.fast and their gear works well. They've now won the next stage of BT's 10M home servable G.fast offering, another 100,000 homes in the next six months. BT's Seeley is hopeful they will get production amendment 2/3 chips, but their main supplier Broadcom is not committed to delivering the chips so soon.
Ray Le Maistre, a first rate British reporter, believes Adtran has a chance to get back in at the next stage of DSLAM procurement. No word yet on which modems will be used. Arris/Pace and Technicolor are hopeful. Nokia and Huawei do not generally build their own modems, I believe, but instead OEM them. BT may be willing to pay the markup for now. There's still plenty of system work to do and they are sensibly cautious.
BT has surprisingly few choices. The vendor community has shrunk drastically. I know only four DSLAM makers and two chip vendor likely to be ready to serve a customer like BT.