Get game news API route?

Is there any api to get news related to the game?
which shows in battle.net app in news section?

for example this feed

There is none, however you can get a json response containing the html for the news list here with this URL:
https://news.blizzard.com/{locale}/blog/list?pageNum={pageNumber}&pageSize={pageSize}&community=all

You’ll need to build a parser to extract the information you want, but that’s pretty much the best you’ll get unless you find a project already doing this.