Gnome software center is not loading anything i am don’t a update system i will post the update if that solves that issue else it is a bug.
Btw fresh install of the beta.iso
It’s not a new tool. It’s integrated in the shell. So it’s a new option like “logout” or “lock screen”. You can either search for it, or hit “print screen” in your keyboard to bring it up.
Please check if this has been reported here yet, if not, please report a new issue: