I actually really love the music & pre show music to Epcot Forever. It's very reminiscent of old Epcot. I do not, however, like the children announcers or the last act of the Epcot Forever. That being said, the show is okay. My favorite parts are Soarin to tower and Veggie, Veggie; fruit, fruit.
Edit: I realize I did not answer your question! The old pre-show illuminations no longer exist, but the preshow music is old Epcot and after show also, which I enjoyed. Tapestry of Nations is in the show, rather than way after Illuminations so that was nice.