I was about as surprised as anybody when the trailer for Pixar’s next film, UP, wasn’t attached to WALL-E this summer. It looks like we could be getting that trailer with either HIGH SCHOOL MUSICAL 3 or BOLT as we’re starting to see some more from UP. Yahoo! Movies has the poster for the film and it features some art that might be familiar to you. As it shows in the bottom corner, UP will be the first Pixar movie in 3-D. Wouldn’t it be cool to have a 3-D poster?…