A new leak suggests that the Nvidia GeForce RTX 4090 will be the first Ada Lovelace based graphics cards to go on sale. Nvidia is expected to announce it alongside the GeForce RTX 4080 and RTX 4070 sometime in mid-July.
https://www.notebookcheck.net/Nvidia-GeForce-RTX-4090-Top-of-the-line-graphics-card-could-hit-shelves-before-the-GeForce-RTX-4080.623238.0.html