The Adobe Muse team (a project which I am a big fan of) has put out an update to Muse bringing it to beta 3. The major update is that it now writes much better code.
The gripe that I have with most WYSIWYG editors is that they write lousy code and any way that they can get better at it is a big positive in my eyes. Therefore it is really lovely to see that the Muse team is concerned about the code and that they are looking at having Muse output better code than it is.
You can read about the update in more detail, including an analysis of the code improvements over at the Muse Engineering Team blog.