It appears that Firefox 4 has fallen behind schedule as Mozilla missed the launch date of the first beta and has confirmed that this release will not integrate D2D hardware acceleration by default.
According to the Firefox 4 Beta Wiki, graphics hardware acceleration support is now categorized as a “missed” feature for the beta software. This note referred to an integration that is available by default. Mozilla says that “some things” for D3D9 acceleration are “done”, while D2D is “not done.” There was no further explanation, but it is reasonable to assume that Firefox 4 Beta will include the same feature set as 3.7a6-pre, which requires the user to activate the currently limited hardware acceleration manually.
Firefox 4.0 Beta menu bar
It is somewhat surprising that this feature is the only one that is categorized as “missed.” The theme and UI for Windows Vista and Windows 7, retained layers, the web inspector, two Mac OS X 10.6 features as well as CSS transitions are categorized as “at risk”. While Mozilla currently lists 150 known bugs for the planned 4.0 Beta release, there are still five bugs that are listed as “beta blockers.”
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