Anyone using Firefox 3.5 Beta 4 will find that they will be automatically upgraded to Firefox 3.5 Preview in the next few days. This version is neither a beta nor a release candidate;  it effectively lies between those two stages in the development cycle.

You’ll need to install HttpWatch version 6.1.39 or later if you want to use it with this new version of Firefox.

The HttpWatch Properties window reports this updated version as ‘Firefox 3.5b99’ :