Also check out www.washingtonpost.com. US Airways is based in the DC area, and United has a hub at Dulles. The Washington Post has run many detailed and informative articles on the proposed supermerger. I always check them.
Aviation Week's website, www.aviationnow.com, has had many good news and analysis articles.
The metropolitan newspapers of other UA and US hub cities (ORD, PIT, PHL, CLT, SFO, DEN etc) would probably also have articles. The Wall Street Journal has run many long pieces but you need to be a subcriber or pay per article from the archive.
Need a new airline paint scheme? Better call Saul! (Bass that is)