I expect that all of the Apple panes will be 64-bit by release time. It could be a bit of a mess for third-party apps though.
Nice find. Looks legit to me. A lot of app version shots and 32 bit compatibility modes. I was under the impression that 64 to 32 was supposed to be transparent. Having a 32 bit mode seems a little unApple to me.
Not entirely. For most of us mac users, it will be because of our Core 2 Duo processors.. but for the few Core Duo users, it'll be 32-bit. (Maybe powerPC users also? unless they removed PPC support)
Not all of the software, just all of the preference panes.