The EPCOT wishing tree, as presented in the artist concept looked more like a fibre optic interactive tree. Less tree, more impressionistic.I think they moved the Wishing tree idea to the new Toontown refurb..
Here's the quote from the parks blog...
A nearby dreaming tree will be inspired by the tree a young Walt Disney would daydream under in his hometown. Sculpted tree roots will provide an opportunity for children to play, crawl and explore, and undulating topography will offer rolling hills and a place to sit and dream.
The one in Toontown in DL will be just a fake tree in a play area whose exposed giant roots are climbable to scratch the itch of the ape-children.