Sixty-six improvement proposals are under review ahead of Ethereum's next upgrade, and the developer community plans to narrow that field before work gets underway. An improvement proposal is a formal technical specification any developer can submit to suggest a change to the protocol. The upcoming upgrade is called Hegotá, and its stated goal is to add more native privacy to applications on the $ETH network.
Native privacy, in this context, means privacy functionality built into the base Ethereum protocol rather than layered on top of it by application developers. When a feature is native, every application on the network inherits it. When it is not, each team has to build its own solution.
Not all 66 proposals will make it into Hegotá. The narrowing process converts a broad wish list into an actual technical agenda. Privacy is the stated theme. The specific mechanism depends entirely on which proposals the developers choose to keep.