Rockwell's Model T wasn't well received and they went back to the drawing board. On 17 June 2021 they announced that they had upgraded their Model T and opened up for orders. The price was $150 but Kickstart backers of the original Model T were given a discount voucher which took their price down to $79.
Once they started arriving the reviews were mostly positive. So what changed....
The biggest (and most important) change is that they raised the T-Bar through the doors, so that it's now visible.
There are apparently some internal design changes.

As with the initial version - It's pretty much a Gillette Clone, now even with the T-Bar peeking through the doors!

The instructions that are included
The image on the far right are the instructions and the nearest is Rockwells information sheet.

(Click on the images to open them up in a full screen)