New iPhone in a new region

You have to create a new account for the UK store, you can't just change the region of your current one.

You can however keep all your US apps, you just need to sign in and out of the appropriate account when you need to update them.

You don't have to switch to the UK store just cause your moving their btw. Unless there is a specific app you require, only available in the UK, you could just stick with your US account.

 

You can still sign in to your US account so all your apps will be fine. Though since you said you're getting a new iPhone when you move over there, I'm assuming your current one is the 4? Because if you have the 4S it has a sim card that Verizon will unlock for you so it will work over there.

 

You need seperate accounts for each app store you wish to purchase/update from, changing the region won't work.

I have apps from two accounts on my idevices and you do get the notification, but you need to sign in to the appropriate account to actually do the update. In itunes (PC/Mac) for example it will show a number of updates but if you click on the update button, it will only show the updates for the account you are signed into, which more than often is less than the number it shows.

 

It isn't really as difficult as you think. You only have to swap accounts when you need to update. The apps will work fine whichever account is actually signed in.

 

What's this option in the iTunes Store account page for?