A couple of things
a) This is not the official site for Fairphone, for such queries you better ask them, maybe via support\at/fair phone dot com.
b) I would very much doubt it as the networks covered are only in the EU and the UK: you may be lucky though but
c) there is no roll out of the update for the networks in the US so you would have to download from fairphone and try the update.
Check this topic for details on updates that are ready for manual download.