It seems Google is removing all the non-essential restrictions over G Suite users using Pixel 4. Previously, the G Suite users weren’t able to get the latest Google Assistant on their Pixel 4, but now Google is removing this issue as well.
Starting today, Google is rolling out Assistant 2.0 for all users using the G Suite. Do note, this feature is rolling out in batches for the US citizens as of now. You can do many new things with the updated Assistant now. This includes features like long conversation, many tricks, etc.
If you haven’t got the new UI, wait for it, as there will be a small 40MB update for the Assistant ready to download.
Source: Android Police