I don't think it's a reworking of 9P.

It's closer to an older style of distributed file system, closer to Amoeba's or the Cambridge Distributed System,

and using full-content storage operations on content accessed through a separate and global name service.

9P (and relatives) allow a huge assortment of surprisingly different service types to be represented and accessed in a uniform way,

where conventional file storage is easily the least interesting service.

(That isn't a criticism: both this and 9P-like things have their place.)