Now that Fedora 29 Workstation got released with a handful of new features including the latest GNOME 3.30, you may want to upgrade your Fedora 28 to this new version.
Without any further ado, you can quickly upgrade your current Fedora installation in few simple steps.
Upgrading Fedora 28 to Fedora 29
As usual, let’s discuss GUI as well as command line based upgrade.
Method 1: Using Fedora Software Center
Step 1) Click “Activities” and launch the “Software Center”.

Launch Software
Step 2) Click “Updates” tab. You should be able to see the notification that Fedora 29 is now available. For some reason, if you don’t see that yet, click on the reload icon on the top left corner. It should take some time to populate updates and show the notification.

Fedora 29 update notification
Step 3) Click “Restart & Update” and follow the on-screen instructions to upgrade to Fedora 29.
Method 2: Using Commands via Terminal
For those who prefer command line method, launch “Activities”, look for “Terminal” and launch it.
Step 1) Enter the refresh command to install all the Fedora 28 updates first. This will make the upgrade process smooth. Enter “y” when prompted.
sudo dnf upgrade --refresh

Updating Fedora 28
Step 2) Fedora will download and install all the Fedora 28 updates. Wait until the process is complete.
Step 3) Install the system upgrade plugin using the following command.
sudo dnf install dnf-plugin-system-upgrade
Step 4) Finally enter the following command to download Fedora 29.
sudo dnf system-upgrade download --releasever=29
Pay attention to the terminal and enter ‘y’ when prompted. You will have to enter it a couple of times.

Downloading Fedora 29 via Terminal
Step 5) After the download is complete, you need to reboot using the command below:
sudo dnf system-upgrade reboot
Step 6) Your system will reboot into the current kernel installed for Fedora 28. Don’t worry, this is a normal process. In a moment, Fedora 29 upgrade will begin. Wait for the process to finish. After another automatic reboot, you will be presented with the Fedora 29 login screen.
Good luck!