Mozilla’s Edward Lee has released an experimental build of Firefox 3.1 pre-Beta 2 that adds support for multitouch gestures on the latest MacBook’s multitouch trackpads.
Edward warns that this is an experimental build and there has been no word on whether this will make it for Firefox 3.1 (it’s definitely not a blocker but could get in if it is dimmed safe enough and there will be time for proper QA).
You can get the experimental Firefox 3.1 with Mac OS X gestures support (in case it is not obvious, Mac OS X only) from Mozilla try build servers.

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