The question was "Will ML be x64 only?" - the answer is yes. Now is one thing, upon release is another. That's what people are asking about. The release notes specifically state 64bit only.
Thanks for being a jerk. I was correcting people saying it IS 64-bit. That is saying it is NOW 64-bit which it IS not. You are correct in saying the question is "will it be?" The correct answer to the question, which I also answered correctly, "Apple states it WILL BE 64-bit." I just added extra information to my response. Have a nice day.