A good link for finding out about RNS is https://reticulum.network which is run by its developer.

Regarding Wikipedia, after some digging:

- It looks like the Spanish Wiki has a page. [0]

- There is an ongoing draft for the English Wiki, denied but not deleted [2]

- The disambiguation page was edited to include it (but reverted presumably because it couldn't link to anywhere without a page)

[0] https://es.wikipedia.org/wiki/Reticulum_Network_Stack

[1] https://en.wikipedia.org/wiki/Draft:Reticulum_(networking)