By default, the text above the newsletter sign up form in the footer of your theme reads "Sign up to get the latest on sales, new releases and more..."
You can change this to whatever text you'd like by modifying your theme's language settings.
Editing your language settings
First, open the language editor by going under Sales Channels > Online Store > Themes. Click the "Actions" button next to the theme you'd like to use and select "Edit language.
On the next screen, find the "Filter translations" box and type "Sign up to get the latest on sales, new releases and more" in the box next to it.
If you've previously modified this heading, enter the text that currently appears above your newsletter form here instead.
Please note you will need to type the text exactly as shown. To save time and ensure accuracy, you may want to highlight the text that currently appears in the header and copy and paste it into the "Filter translations" field.
The area below the "Filter translations" box should change (you may need to wait a movement or two).
You should see, as shown above, a "General / Newsletter form" heading followed by a text field labeled "Description."
Change the text in this field to whatever you'd like to appear above your footer newsletter sign up form.
Click "Save" in the upper right and refresh your page. The change should be live.
A note about theme upgrades
Please note that you will need to manually update this field each to you upgrade your theme. The pro version of our Shopify Theme Updater App offers the ability to transfer this and other translations over automatically for a small monthly fee.