I am not an expert by any means on Atlas O and their supply chain (or lack of), but I am a buyer and user of their larger O72 switches, which have been on backorder forever. They don't publish a shipping schedule, and the biggest dealer of Atlas O (as far as I know, JD trains) has been pushing the back order date for a year or more.
Most of my diesel locomotives require at least O54 and all of my steam requires O72. I started a massive layout undertaking a few years ago before the backorder issue. Three quarters of the way through, there are no new O54 or O72 switches to be found unless you want to roll the dice on e-bay. No requisite dwarf signals either. I am too invested in Atlas O to change or replace the track now.
Does anyone have any news or updates on when this stuff might be coming. Sorry to vent on the forum, just stuck and want to get my railroad moving.