No specific info about version 2.0 beta. Please visit the main page of PDF-XChange PDF Viewer on Software Informer.
Excellent program. The price is right too.
First of all, it's free. Secondly, it allows savable and editable annotations. Lastly, it's so much faster and netbook friendly than Adobe. The only I can't give it 5 stars is that it is not as optimized to use on a tablet PC with inking as PDF Annotator.