Plans for privacy-preserving computation?

Are there plans for adding privacy-preserving compute to Solana some time in the future (i.e. smart contracts with private state)? I noticed that Dfinity plans to support private canisters by running subnets that use enclave hardware like Intel SGX (in this post from Dominic https://www.reddit.com/r/dfinity/comments/iun6u1/couple_of_dfinity_developer_questions/).