I feel your disappointment. We were booked on it for August and were so looking forward to it but then received an email cancelling it and issuing us with a refund, this was back in November. I emailed asking why it was cancelled - was it lack of interest? too expensive? and received a lovely long detailed email back which unfortunately didn't actually tell me anything that I wanted to know!
I am not booking anything for our week in Anaheim now (apart from hopefully the Walk in Walt's Footsteps tour) in case it re-opens or something similar is offered.