Since Mac OS X 10.6 is coming out tomorrow I thought I’d give an update on 64-bit Gecko for Mac OS X. Progress is tracked on Mozilla bug 468509.
We’re very close to having running builds. We still need to replace some old API usage related to complex text input and print dialogs, but aside from that I do not know of any other major work items. We have come a long way and we will have builds within a month. As soon as we can produce them we’ll start working on getting a 64-bit Mac OS X 10.6 tinderbox set up to produce nightly builds.
We have not made any decisions about shipping an officially supported 64-bit build for Mac OS X. I suspect at some point we will make the decision to remove the PPC architecture from our universal binary and replace it with x86-64 but like I said, we have not made any decisions yet.