I got a Ho-Oh card (not an EX) at the prerelease in Miami, and it was spelled just the way I spelled it. So maybe that's the official spelling from now on?
You see, I agree with WPM, #1. Now, I may sound like a Conservative who doesn't like change, but I prefer what we already had. What if all of a sudden they started calling it Farfect'D?
The big problem is how many people misspell FARFETCH'D, let alone the proper capitalization of HO-OH(I made it all capitals to prevent confusion between Ho-oh and Ho-Oh, which we all know are two utterly different pokemon.)