There are going to be a series of Up vignettes being released as the premiere of Pixar's first 3D movie, Up, gets ever closer. They are called "UPisodes". The first one has just been released on Disney.com and is called Animal Calling. The animation is great, the characters are awesome already, and the whole thing has a very nice style to it that is simply great to look at. You can see it here, as well as see the preview for Up that aired during the Super Bowl. Nothing exciting; just a new voiceover and a little bit of new footage. Enjoy!
Up is coming out on May 29 of this year. Learn more about it here.