Discussing something altogether different somewhere else, I came across a discussion that led me to this:

Chicken Little:

Disney gave Chicken Little to a 3rd-party to convert the film into 3D. However, they provided original 3D models, so it's nearly a native rendering. This is similar to Meet the Robinsons. Ideally, they would've re-rendered with a second virtual camera.

Meet the Robinsons:

According to this YouTube they appear to have original 3D models. I also talked to a friend of some of the crewmembers, and apparently they projected the original 2D image onto the 3D models because it was faster than re-rendering with a second camera. This is why it appears like a longer conversion process in this article. If you have the original 3D geometry, that's real enough.

Beauty and the Beast:

Since new 3D models are being created to extrude the original 2D objects, this counts to me as new content, and so Beauty and the Beast will technically be "Fake 3D." However, Disney has all the original artwork saved in separate levels, so there may not be much "filling in the blanks" done by the new animators. Instead, the conversion may be more like the process used in Meet the Robinsons (see note 3) which I categorized as "Real 3D." Plus, unlike the other "Fake" films, Beast is neither live action nor 3D animation, and so moviegoers are not being sold an inauthentic experience.

No word if Lion King or Little Mermaid are converted in the manner.

Anyway, I don't need to update the guide for them because it's still definitely not OTV, but Chicken Little and Meet the Robinsons has me scratching my head. Were the 3D versions released simultaneously? Are they still considered 'modified' from the original animator's intent?