The only news type app that I personally like on the watch, at the moment, is theScore. (sports). Its not so much news reading as just getting infrequent notifications about specific teams I follow. All college football so the news is slow compared to regular season.
I don't see myself at the moment reading much news on the watch but you never know about the future. I have a 6+ but still read most of my news on my iPad. Exception is when we are away from the house and I am sitting/waiting and didn't bring it with me and then I use the phone.
Sorry I didn't provide you with a recommended app but so far have not found one I would recommend.