Blender 2.8+ Camera Tracking with variable Focal Length (zooming)?

I’ve seen on a couple forums that camera tracking with variable focal length used to be planned for Blender all the way back in 2013 (for example here). Though, all links I’ve found linking to the Todo ticket are broken.

Is track camera motion while also tracking changes in focal length still a planned feature? In addition, being that this has been talked about since 2013 why hasn’t it been added yet?

Hio did you find a solution?