The Tibo 28 day challenge is not really anything.
What OpenAI has is a changelog that they have most likely already completed. Every day is basically just going to be one line from that changelog. We saw this when they said that changing the names of the tiers counted as one of the 28 days. All this really is is the slowest commit/push ever.
There will probably be a day, or maybe even two, where you get a free reset, but those days are planned. There may also be one or two big releases, but they have a big release almost every month anyway.
We will most likely see Luna 6.1. We will see some TTS stuff. We will see some Codex updates.
If you thought there were going to be 28 days of real releases, or that you were going to get a ton of free resets, you are just kidding yourself.