NVIDIA is expected to released RTX 5000 series GPUs in late 2024. So will mid-rangle RTX 5070 will coming along with RTX 5080/5090 ?
Usually about one month later.
If RTX 5090 is released in September, the RTX 5070 will be released in October/November.
They may announced at the same time, but release date could be vary.
Based on latest rumors, RTX 5080 will release first, then RTX 5090, the RTX 5070 is expected to be released in early 2025.