Thank you for informing me about that, now I'm so exicited to see this episode! Unfortunately they took it off the PBS Kids website before I could see it and they took it off the PBS Kids video app which I also have on my phone. And I tried looking on Dailymotion and Kisscartoon for it but it's not available on those.
I guess I'll just have to wait until tomorrow or possibly the day after!
I would have just told you on Arthur wiki but I was afraid I'd get in trouble for responding to a deleted message.
But thank you! I really look forward to seeing the special now.