A new report says that Nvidia has delayed the GeForce RTX 3080 Ti launch date to mid-May. No reason has been cited, but it is safe to assume that it has something to do with the global semiconductor shortage. This will inadvertently affect the GeForce RTX 3070 Ti's release, too.
https://www.notebookcheck.net/Nvidia-GeForce-RTX-3080-Ti-launch-date-pushed-back-once-again-graphics-card-likely-to-be-released-by-mid-May.529180.0.html