[Matthijs]

@markiehill:
That does make sense. I cannot go into details of what is going to be in next versions, but what I can do is share some information on projects that we consider interesting for 3rd party developers.

Nice examples of things we will not likely develop soon ourselves are: full web-browser, games, email application, calendar functionality, calculator, etc.

As for document viewers: you're welcome to start developing an additional format (like RTF), but to facilitate viewer development we're currently working on a viewer framework. This would abstract creating a document viewer somewhat and make all viewers behave in a similar way. Each document format would have a plugin to the framework and the effort for enabling a document format would be reduced to porting an existing library and writing glue to hook it into the viewer framework API.

Given this, I'd say that porting an existing document viewer (like f.i. FBreader) would be a lot more useful than trying to write an RTF viewer from scratch (or starting from iPDF).