The IEBlog announced that the IE Developer Toolbar Beta 3 is available now.
It contains some nice updates such as new interface with an icon in the command bar for easy access to the DOM Explorer and finally a great HTML source viewer.
Time will also tell if the R-character hijack bug is still left, I have not noticed it yet…
Note: You have to uninstall previous betas of the IE Developer Toolbar, otherwise you will have some nice crashes of Internet Explorer when trying to access the toolbar.