Google has been testing showing more in the autocomplete search suggestions drop-down bar as you type since September 2020 and then more so again in August 2021. Now it seems like the full-width autocomplete search suggestions with people also ask and people also search for is rolling out.
The way to trigger this, as Brodie Clark explained on Twitter is to do a search, then click in the search bar once and then the menu should come up. I can replicate it and I created of GIF of how this works so you can try it yourself:
I guess this goes with the trend of full-width images and the full-width map local pack and so on.
