I have just released 1.1.2. That's exactly a month after the 1.1 release. 1 major and 2 minor releases in one month time. iText is really on the right track!
The most important changes in the 1.1.2 release are the Table bug fixes and the support for multiple signatures, revision information and extraction.
In the meantime, the framework to build the new tutorial 'iText by Example' (http://itext.sourceforge.net/tutorial/) is getting more and more stable.
Documenting iText is on top of my TODO list. Bookmark the tutorial link, you will see new examples popping up every week.