At the moment it isn't (DNN isn't even public yet, but it seems like that'll change soon). Right now I'm testing out various things still, one of which is basic implementation of within a lightweight browser (going well), and once that's done, I'd start implement it in forked version of chromium, brave, maybe firefox too, if i can, and have it up for people to use. With time, as bugs are ironed out, and more people start using it, along with a few nostr clients implementing it, and a few projects having domains, a few posts here and there with a few videos, then I'd start hitting up the Brave team to discuss the potential of adding DNN support.