In pursuit of fostering a strong developer community, Hedera will make available the ability for any developer to submit improvement proposals starting at v1.0 of the Hedera mainnet.
Improvement proposals can range from core protocol changes, to the applications, frameworks, and protocols built on top of the Hedera public network and used by the community. The HIP author is responsible for building consensus within the community and documenting dissenting opinions, as well as tracking their HIP through a defined process.
You can learn more about Hedera improvement proposals at https://github.com/hashgraph/hip/