I heard about Xiine on .NET Rocks and figured I would see what all the hype is about. It is a reader for magazines, books and other formatted content built on .NET 3.0 technologies including WPF. Future releases are also support RSS from what they were saying on the show.
I have to say that the interface is pretty clean. The one thing that I notice is missing from the current release is discoverability from within the application directly.
The main navigation uses a bread crumb menu, which I find a little odd but usable. I also found it strange that you only two menu options are either change user or read selection. I like the off line features to be able to read and search my magazines. The paging paradigm works well although at first I found myself looking for the scroll bars.
In all it looks like it will be a pretty cool product as it grows. It is worth keeping an eye on. For more information Code Magazine has an article that explains more of the features.