Updating my google play "What's new" section

As of early May 2017, the release process has been in constant flux. The current way of modifying release notes of an app that you've already released, is to:

• Choose your app
• click the Release Management dropdown from the left menu
• click App Releases
• click Manage Production

On the resulting page, tap the small (i) (info) icon next to your APK, as also shown in this screenshot, and you'll find the notes at the bottom of the dialog that pops up, along with an Edit button.

If you don't see the circled "ℹ", it might be pushed off too far right and clipped by the browser. It changed a couple of days after I took this screenshot.

In what's new section you must have to write text in between

What's New:

<en-US>
Write text here
</en-US>

You now need to go to the APK section and click on the relevant build. From there you can edit the "What's New in this version" text.