Good rundown of everything new and changed, as usual, from Juli Clover at MacRumors. This has been a noticeable change for me:

The App Store merges apps and purchase history, and has a dedicated section for app updates. It now takes two taps to get to app updates rather than having them available at the bottom of the profile page.

At first the extra tap irked me, but it really does make more sense for Updates to have its own section. I update apps manually, because I like reading release notes from developers who take the time to document changes, and I also like reading “Bug fixes and performance improvements” over and over and over again from developers who do not.