The pic posted below is a screencaption from seeing-stars.com which states that the cast of Twilight will be joining other infamous individuals and will have their hands and feet memorialized and displayed outside of Grauman’s.
At this moment, no confirmation from Summit or any representatives has been made. Also, it’s good to note that the “cast” may very well just be the Trifecta. Rob, Kristen, and Taylor are the faces, if you will, of the Twilight franchise, so don’t be surprised if it turns out to be just them.
All we can do now is wait and see. I’ll post again if/when news is released.