One of my favorite note taking apps, NotesPlus is being updated. The most intriguing part of the update process is the openness of the process. The developer is encouraging beta testers to openly discuss proposed fixes, problems, etc. The discussions can be seen here.
You can watch some of the features in action as shown by a tester on this video.
An additional video showing some more features is also available.
Not only will you be able to mark up PDFs, but you will be able to make and take notes in a natural and high tech way.
One of the fun new features will be the ability to see a PDF or browser on one side and take notes on the other.
Not only are there some new cool features coming to note taking in general on the iPad, but the kinds of tools and ways of interacting with an iPad are expanding as well.