I found this online looking for info on Season 5 of the show. Some here have speculated that these kits will be released to coincide with the show dropping on Netflix.
Even though Season 5 is already in production, you probably aren't going to be able to watch it this year. That's because Stranger Things, one of Netflix's biggest series ever, is missing from its 2024 slate. Barring a big surprise, that means you should expect to see the conclusion of the full Stranger Things in 2025.