SP
I would suspect that ITV want to draw attention to the changes as little as possible. If people tune in to see the same set and titles they're used to, I suspect many casual viewers won't realise they're watching a programme covering a wider area.
I think a big revamp would only highlight that things had changed.
So I'd expect nothing more than some different images in the opening titles, and maybe the projected 'window' backdrop being replaced with something generic - perhaps the graphical backdrop that Calendar already uses.
Edit: Got interrupted half way through writing that post. I see Phil beat me to it making a similar point.
I think a big revamp would only highlight that things had changed.
So I'd expect nothing more than some different images in the opening titles, and maybe the projected 'window' backdrop being replaced with something generic - perhaps the graphical backdrop that Calendar already uses.
Edit: Got interrupted half way through writing that post. I see Phil beat me to it making a similar point.