Microsoft have rolled out the Halo Insider Program, a new way in which fans can aid 343 Industries and help shape the entire franchise. If you do choose to sign up, though, you will be bound by the non-disclosure agreement so beware.
Just in case you're not aware of the concept, NDAs, as they're commonly abbreviated, are the sort of agreements that prevent you from running your mouth in public and sharing what you've legally agreed not to disclose.
That said, members of the Halo Insider program will be privy to some inside info as Microsoft wrote that they'll "have the opportunity to regularly provide feedback and insights that help shape and inform current franchise initiatives and the future of Halo".
Halo Insider members will also be considered for early access playtests of the franchise's games that are currently in development, so if you're hungry to learn more about Halo Infinite, this is as good a chance as any.
Note, however, that signing up for the program does not make you a shoo-in for every Halo playtest, as the competition is likely to be high. Microsoft did advise that having complete and accurate Halo Insider settings displayed helps in this respect but still isn't a guarantee.
Along with testing, Halo Insider program will feature periodic surveys, the kind which has so far provided Microsoft and 343 with "invaluable insights that helped inform everything from in-game weapon tuning and playlist updates to future consumer products and merchandise roadmaps".
Halo Insider Program replaces the earlier MCC Insider Program and if you were a member, you will have to register again. PC players will have to link their Steam accounts and provide a DXDiag breakdown so Microsoft know what they're working with.
Once again, we're not just talking about a random playtest here and there as Microsoft and 343 are building a sort of beta-testing community so any Halo Insider information you disclose will make you subject to legal repercussions, hence the age requirement of at least 18.