All I'm saying is is I wait in general until companies themselves announce and confirm. So until Disney makes an official report Im gonna like I said take it with a grain of salt. But again wouldn't surprise me in the least if a Toy Story 4 was in talks. I know Finding Nemo is being re-released in theaters in 3D this fall.
Even if TS4 was going into production... we wouldn't see it for about 5 or 6 years. Even the IMDB has a (????) as a date. So clearly, the rumors are that there are rumors and that it might be taken into consideration. Pixar still has at least 4 confirmed movies after next year's Monsters University. Only one of them even has a title, The Good Dinosaur.
Even if TS4 was in consideration, they have a VERY full plate. Unlike Dreamworks, that can get out 2-3 movies a year, Pixar has only done one a year... and that's after a long period where they only did one every 2 years. They were trying to get 2 out this year, including Monsters... but it got bumped because it wasn't quite finished, and they didn't want it opposite Twilight.
HOWEVER.... there IS a new Toy Story Toons short... I think it could be released with Wreck it Ralph. It has a LOT of confirmation,
including an actual bath toy.