Preserving 98 reminds me of keeping that old classic car around. Why throw years of experience in an OS away, when it still works? Noticed this too: Firefox Version 4.0 On October 13, 2006, Brendan Eich, Mozilla's Chief Technology Officer, wrote about the plans for Mozilla 2.0, the platform on which Firefox 4 is likely to be based. These changes include improving and removing XPCOM APIs, switching to standard C++ features, just-in-time compilation with JavaScript 2 (known as the Tamarin project), and tool-time and runtime security checks.
