Apple has updated the Apple Developer account webpage, where registered developers can access program resources, manage their membership, request code-level support, and more, introducing a new UI that makes the contents of the account page more easily accessible.
As noted by MacRumors, the updated Apple Developer account webpage replaces the previous sidebar for navigation with a new all-in-one top navigation bar, which has tabs for program resources, email preferences, membership details, code-level support, agreements, and events.
Selecting any of these options sees the webpage scroll down to the relevant section, which then has links to specific pages relating to the option selected.
Registered developers will see the new webpage UI when visiting developer.apple.com from an iPad or Mac.