We have UPK and the content for 8.11. It is a glorified screen capture utility that makes slide presentations of step-by-step functions that you display and capture from your screen. It may be faster and cheaper for you to use power point and capture screen shots with the clipboard, not much of a difference in what you get...
In the "player" mode you can make a lesson interactive by waiting for clicks, or inserting boxes which force the user to fill a predefined value into a screen area. The design tool is PeopleSoft's OEM version of a 3rd party training software, made by Global Knowledge.
To design a full meaningful lesson with UPK developer, you need to put a lot of work into it, more than the trainig ends up being worth... Probably OK for complete newbies to see JDE, but average or advanced JDE isers in your organization will find it annoying. The "movies" or "lessons" can be deliverd over a web server to browsers and the lessons can be saved in screen by screen flat HTML or in a more "animated" web-player-version.
I find it completely worthless -- the only thing that can make it more meaningful for you out-of-the box is if you also buy their developed content (pre-made standard lessons for each JDE module) and you are satisfied with just generic examples, rather than having to design ones that fit your company's business process and data.
It was a tool heavily used by the old PeopleSoft product line and (to increase revenue) they started "upselling" and pushing it to JDE customers... What I like call "parasite software" sales.