Apart from having new cars (and maybe new tracks) this looks pretty much the same as DR2.0 gameplay wise doesn't it? Even the parts of the menu they show in the video, for example the assists control menu, are largely the same as DR2.0.
It does look like they finally added clutch control instead of "Sequential" or "H-Pattern with Clutch, however it's not clear from the settings description if that's really what it does. That always made me annoyed that the interior camera showed a clutch in most sequential cars (all the 2018-19 era cars have them in real life) but you couldn't use it if you set up the controls the "right" way.