Now exactly historic news, but two new SKUs have been detected. And it seemed they could be tied towards Ti models of the GeForce RTX 3070 and 3080. In addition, a suspected launch date now has been shared.

If they'd be released of course they would be designed to compete with the agile AMD 6000 series. The GeForce RTX 3070 Ti would be based on a GA104 chip and has the product code "GA104-400-A#." The current RTX 3070 disables one of the shader clusters on the GA104,  5888 shader cores. The RTX 3070 Ti probably thus would reach 6144 shader cores. Memory configuration remains speculation.

GeForce RTX 3080 Ti of course is based on GA102 silicon and has product code "GA102-225-A#." It likely has more shader clusters enabled as well. The source indicates a mid-April release on the RTX 3080 Ti, RTX 3070 Ti would follow in May/June. The spec table from videocardz is to be said from an AIB.

Update: Asia-based ITHome now reports that the 3080 Ti is a real thing and that the launch will commence in May 2021, originally it was planned for April. 

NVIDIA internally issued a new announcement that the release time of the next-generation RTX30 series model. The RTX 3080Ti 12G has been delayed again, and it is now expected to be released around mid-May.

— ITHome

Earlier news revealed that the RTX3080Ti was originally scheduled to be released on the market around mid-April, and the price is expected to be the same as that of the RX 6900XT, which is about 999 Euro/USD. Considering this is the 4th or 5th delay, as usual, take these matters with a grain of salt.

NVIDIA GeForce RTX 3080 Ti 12GB released in May?