Incorrect.

  Leaked prior to announcement - Leaked Benchmarks Confirm M2 Chip is Up to 20% Faster Than M1 https://www.macrumors.com/2022/06/15/m2-geekbench-benchmark/

Date of article: June 15, 2022 10:32 am PDT. M2 announcement was June 6.[0]

I don't feel like doing it for your other sources. They follow the same pattern. You can check official announcement dates vs "leaked" dates yourself.

[0]https://www.apple.com/newsroom/2022/06/apple-unveils-m2-with...