Currently, IPFS [1] looks most promising to me. It's easy to publish a static website to it [2], and public gateways are available to make the site accessible to readers who do not run their own nodes. While IPNS (the naming system) does not seem to work reliably yet, hash of the current version of the web site can be published in a special DNS TXT record, and if that same domain points to IP address of a public gateway, the web site will be simply accessible via that domain.
[1] https://ipfs.io/ [2] https://github.com/ipfs/examples/tree/master/examples/websit...