There are some quite convincing signs that NVIDIA and partners are going to release the GeForce RTX 4070 in as many as three memory configurations. Tech site VideoCardz probed what appears to be the Thailand-based Aorus game registration site, and noted that qualifying bundle products include the following GPUs:
Gigabyte GeForce RTX 4070

Source: Hot Hardware – Gigabyte GeForce RTX 4070 Listings Hint At Multiple Memory Configs Up To 16GB