It's been a while since my last Goldstealer theory (in which its release would possibly coincide with the MSB movie), and my first one since it got leaked back in June of '23.
So, from what I've noticed, the Rides Again Season 3 episodes all relate to a specific event:
Kids in Space: Anniversary of the launch of the International Space Station (which is supposed to be in November)
The Frizz Connection: International Balloon Fiesta
In the Zone: New Year's Eve and Day
Goldstealer: Summer Olympic Games (which is supposed to be in July/August of leap years)
According to this, Goldstealer was supposed to take Kids in Space's August 7, 2020 airdate, because Kids in Space was supposed to release in November of 2020 to commemorate the ISS's launch on Nov 20, 1998. But since COVID delayed the Tokyo Olympics to '21, KiS replaced GS and GS was delayed to the Nov. 9, 2021 DVD release. Or GS was supposed to release in June or July, but because we lost Joanna Cole, Scholastic decided not to do anything MSB related on the month of her death.
Also another thing that I've noticed is the order of the S3 episode screenshots in the credits goes: Goldstealer, The Frizz Connection, Kids in Space, and In the Zone. Meaning GS was supposed to be first/KIS was supposed to be third, and that was the original airing order.
Though there is a chance for Goldstealer to release on Netflix. There will be Summer Olympics this year in 2024 (the Paris ones), so it's a possibility Goldstealer may get a 2024 Netflix release to promote the Games. But for now, the October 30, 2023 Knowledge Kids airing is the best quality you can get.