While I don’t expect Apple to present a full redesign of the software, there should be major changes across the system, new ways of interacting and some fresh Apple apps.
The “fresh Apple apps” likely refers to a refresh of the bundled Apple iOS lineup.
That means Apple’s default browser, Safari, could get a bump to its user interface, along with Messages, Photos, and the other Apple apps that come preloaded with each device, including iPad apps.