Hello,
My company is currently working on a new app that will be separate from our current app and also have different features/functionalities.
We want to use the name of the current app (V1) for the new app (V2), and change the name of the V1 to something else.
Are there any restrictions or waiting periods on whether we can change the V1's name to something else then use the V1 name on the V2?
So you'll have to first change the name of the old app.
Once changed and visible in Appstore (that's the only delay I know), check for the old name. You should not find it and thus be able to create the new app with this name.
You should explain this very clearly to reviewer in the notes to reviewer.
Another point,: I don't know if there is a risk some one reuse the old nam before you…So go fast.
Anyway, you'd better double check with Developers support.
If you get a precise answer, please report here.
Is there any reason why you are not just adding a new app to your collection of apps on the App Store? That seems like a much more straightforward route to me.