But perhaps more interesting than that is the possibility of mixing SVG graphic elements directly into the markup of regular XHTML pages, freeing vector graphics from the small rectangle of a browser plugin and opening up a host of exciting new possibilities for web developers. This is enabled by the integration of SVG directly into the Gecko rendering engine, instead of as a browser plugin.Source: Slashdot
Firefox 1.1 to feature SVG support?

Firefix 1.1 will likely feature native SVG (Scalable Vector Graphics) support.