Interestingly, Ladybird, which aims at being the n = 3, is also written in C++.

Ladybird is in the process of switching over to Swift, and has been for a little over a year now.

Not linking to the pedophilic nazi-site, and as Nitter is dead-ish, here is the full-text announcement archived on tildes: https://tildes.net/~comp/1j7m/ladybird_chooses_swift_as_its_...