Here is the text of the email that is being sent to Windows Phone Wells Fargo customers:

You'll notice a new look and feel when you sign on to the Wells Fargo Mobile® Banking App. It has the same robust features you're used to, but common tasks will be easier thanks to improvements that include:

More navigation options

Redesigned search and filter to help find transactions

An enhanced payment calendar

This redesign is just the beginning. We're committed to providing you with tools to help you succeed financially. The redesigned app will make it easier for you to get banking done.

What this means to you

Starting in late June, we will be releasing a redesigned Windows App and no longer be supporting Windows 8.1 or earlier. We regularly update our mobile banking services, and older operating system (OS) versions or devices may not support these new features and enhancements.

What to do

Update your Windows device now to Windows 10 to ensure uninterrupted access to the Wells Fargo Mobile App.For help with updating your OS, please contact your mobile device service provider If you are unable to update to Windows 10, you will still be able to access your accounts from your computer at wellsfargo.com; however, the app and mobile website you are now using will no longer be accessible.

Thank you for being our customer.