Practical Travel Safety Issues - TSA Pre-Check starts in SEA Apr. 24th

I came through the checkpoint behind the United counters today and they were setting up the Pre-Check with several TSA suit-types supervising. They said they were supposed to be up and running today but ran behind and plan to be starting at 4am on Apr. 24th.

The previous elite-only bypass will be used for pre-check. The regular elite line will continue to direct on the right but not go to the bypass line but go into the regular section.

There previously was a WTMD-only land on the far left of that checkpoint that I liked to use. Is that the one they are using for pre-check?