Oracle released PeopleTools 8.55 a while ago already. Here is a nice overview of all new features that come with this release.
8.55
PeopleTools 8.55 classic interface
Since PeopleTools 8.55 the default interface for PeopleSoft applications is the Fluid interface. While this is very convenient for self service functionality, not all back office functionality is available in Fluid.
This article describes how to revert to the classic interface.