I don’t know. But once you take control and start making views look how you want them to look you won’t want to go back.
Yes discovery still works.
To add new devices to views: Click the 3 dots. Select edit UI. Add a new card with the (+) button lower right on the page. Add the type of card you want (e.g. glance) then fill out the form to add your new entities.
Finding recently discovered devices is very easy. Familiarise yourself with the following:
Developer Tools, States page.
Configuration, Integrations page.
Configuration, Entities page.
Also / three dots menu / configure UI / unused entities.
Thanks all for the help. Last question (but I think the answer in a no)
Is there a way to have a second profile(?) where I can connect to HA?
I mean to keep the one as it is right now, and with the same setup to (hardware) to have one more account to play with?
If you have devices that can be controlled from two different home assistant instances e.g. mqtt or hue lights then you could set up a dev instance. If you would run docker just make another and map it to different port.
But if you have devices that are bind to e.g usb (like zwave stick) then this is not possible.
All the users/profiles (or what those are called) see the same views and tabs per one home assistant instance.