Yeah, I do agree it will most likely be small tweaks, though the first look at ‘The Latest: Seven News’ may possibly hint some sort of refresh, and spotted by @NewsAustralia recently…
The fact that both Perth and Adelaide appear to have the same set design is telling, and appears to have similar elements, like the glass panes and hints of red, white and black. It doesn’t seem like something that would be done randomly, though a change like this would be pretty radical considering the set differences (virtual VS physical).