That video is old. It was posted on YouTube in June 2018 so the T1 mentioned is the PRR T1 which was already released, not the Reading T1 of AFT fame.
They must be recycling the video because of the next run of F3/F7 is due any time now.
What I find interesting is that FDT has a 1ยข Pre-order and in the steam section has listed more 2-8-2 Light and Heavy Mikado's due for May 2020. The BLI site's "Expected Product Delivery Schedule" doesn't have them listed, just the F3/F7/PA that are due over the next month or so.