I went ahead and called, since I wanted to know so I could plan (my daughter is looking forward to this meal #1).
I spoke to the manager.
They WILL be changing to 2-ticket lunch *sometime* this year, but the date has not be announced. It will not be immediately, and it will continue to be 1 ticket for the near future. She specifically addressed my question of this week, and that it will be 1 ticket at lunch.