Derick Rethans has posted a release announcement about the latest Release Candidate for the XDebug debugger utility - xdebug 2.0.0RC2.
There are not many new things in this version but there are lots of bug fixes. The display of stack traces has been optimized a bit more, you can find a screen shot of that here below. Instead of showing the full path and function arguments it instead shows only the file name, and the type of argument. If you hover your mouse of the items the full path and full variables' contents appear.
You can check out a screenshot of the application's interface on his blog and head over to the XDebug site to get the latest download and complete information on using the tool in your scripts.