What are some proposed privacy features coming to the bitcoin lightning network?

If I’m correct, a bitcoin sent into a lightning channel technically looks like any Bitcoin transaction. From there if the channel never closes, the Bitcoins can essentially stay in a "locked" state in that channel which can give it some interesting properties such as the most needed feature in Bitcoin, privacy & fungibility.

What are some projects that are currently implementing privacy features into the Bitcoin lightning network? If there aren’t any, what has been discussed that could be possible?

Article source: “https://bitcoin.stackexchange.com/questions/87894/what-are-some-proposed-privacy-features-coming-to-the-bitcoin-lightning-network”