These are final ISOs for 3.03. If these will pass through QA testting then you may publish these ISOs for public.
Known not working features:
Plasma on Wayland.
In logs you can find:
plasmashell[815]: The Wayland connection experienced a fatal error (Protocol error)
I don’t know what may be the issue, help is more than welcome.
And a mention about KMail. I would request that testers please test KMaileven if you don’t use. I recently tested in ‘Live’ ISO. I open KMail, add a user account, and send and receive an e-mail. All while running ‘Live’ off a USB flash drive. It worked just fine.