Nvidia has officially declared that it has no new information about the GeForce RTX 300 Ti in a statement to The Verge. Initially slated for a January 2022 launch, the graphics card got pushed back due to hardware issues, presumably because of its high power requirements.
https://www.notebookcheck.net/Nvidia-remains-tight-lipped-about-the-GeForce-RTX-3090-Ti-and-its-tentative-launch-date.599756.0.html