Before launch, Sony said that the re-designed PlayStation Store would receive regular updates, and the first is now available to download. A new patch is available updating the Store to version v1.01, and is 26 MB in size. Unfortunately, no changelog is included so we don’t actually know what’s new.
The update is mandatory to access the PlayStation Store if you wish to continue using it. From looking at the store, we don’t actually notice anything different. The patch should have introduced some underlying changes to the store, not immediately visible to the end-user.