timwi brought to my attention that the Mozilla's browser-only project has been renamed again, this time to "Firefox" [page currently overloaded], now that 0.8 is out. ("Thunderbird" is still called that, though.)
See also his journal entry.
(Random linguistic note: at first, I wrote "Timwi made me aware of the fact that..." but I discarded that as being too close to the German construction "Timwi machte mich darauf aufmerksam, dass..." which led me to doubt its idiomaticity(?).)
Edit: Their roadmap says that they want to "be building up an aggressive campaign to market the Firefox browser".
Renaming it fits right into a marketing campaign, I'm sure! Nothing quite like it to boost brand recognition!
Edit 3: Apparently, Mozilla have trademarked "Firefox" in the class of "Browsers, namely, software for browsing and interacting with data on the global computer network and secure private networks, and software programs to connect computers to the global computer network and to secure private networks", so hopefully this name change will be the last one.